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  <xs:element name="StockIssuedDuringPeridSharesSaleOfUnitsNetOfUnderwritingDiscounts" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_StockIssuedDuringPeridSharesSaleOfUnitsNetOfUnderwritingDiscounts"/>
  <xs:element name="StockIssuedDuringPeridValueSaleOfPrivatePlacementUnits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_StockIssuedDuringPeridValueSaleOfPrivatePlacementUnits"/>
  <xs:element name="StockIssuedDuringPeridSharesSaleOfPrivatePlacementUnits" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_StockIssuedDuringPeridSharesSaleOfPrivatePlacementUnits"/>
  <xs:element name="NumberOfSaleOfUnits" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_NumberOfSaleOfUnits"/>
  <xs:element name="PrivatePlacementWarrants" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_PrivatePlacementWarrants"/>
  <xs:element name="InvestmentOfCashIntoTrustAccount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_InvestmentOfCashIntoTrustAccount"/>
  <xs:element name="ProceedsFromTheCollectionOfTheStockSubscriptionReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_ProceedsFromTheCollectionOfTheStockSubscriptionReceivable"/>
  <xs:element name="ProceedsFromSaleOfUnitsNetOfUnderwritingDiscountsPaid" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_ProceedsFromSaleOfUnitsNetOfUnderwritingDiscountsPaid"/>
  <xs:element name="DeferredOfferingCostsAssociatedWithProposedPublicOffering" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_DeferredOfferingCostsAssociatedWithProposedPublicOffering"/>
  <xs:element name="IssuanceOfStockForStockSubscriptionReceivableFromStockholder" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_IssuanceOfStockForStockSubscriptionReceivableFromStockholder"/>
  <xs:element name="ChangeInCommonStockSubjectToPossibleRedemption" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_ChangeInCommonStockSubjectToPossibleRedemption"/>
  <xs:element name="DeferredUnderwritingFeePayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_DeferredUnderwritingFeePayable"/>
  <xs:element name="InitialPublicOfferingTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_InitialPublicOfferingTextBlock"/>
  <xs:element name="PrivatePlacementsTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_PrivatePlacementsTextBlock"/>
  <xs:element name="EmergingGrowthCompanyPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_EmergingGrowthCompanyPolicyTextBlock"/>
  <xs:element name="OfferingCostsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_OfferingCostsPolicyTextBlock"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsScheduleofbasicanddilutednetincomelosspercommonshareTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_SummaryofSignificantAccountingPoliciesDetailsScheduleofbasicanddilutednetincomelosspercommonshareTable"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsScheduleofbasicanddilutednetincomelosspercommonshareLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_SummaryofSignificantAccountingPoliciesDetailsScheduleofbasicanddilutednetincomelosspercommonshareLineItems"/>
  <xs:element name="IncomeAndFranchiseTaxinDollars" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_IncomeAndFranchiseTaxinDollars"/>
  <xs:element name="NetEarnings" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_NetEarnings"/>
  <xs:element name="RedeemableNetEarnings" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_RedeemableNetEarnings"/>
  <xs:element name="NonRedeemableClassAandBCommonStockBasicandDiluted" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_NonRedeemableClassAandBCommonStockBasicandDiluted"/>
  <xs:element name="LossBasicAndDilutedNonRedeemableClassAAndBCommonStock" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_LossBasicAndDilutedNonRedeemableClassAAndBCommonStock"/>
  <xs:element name="FairValueMeasurementsDetailsScheduleofassetsthataremeasuredatfairvalueonarecurringbasisTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_FairValueMeasurementsDetailsScheduleofassetsthataremeasuredatfairvalueonarecurringbasisTable"/>
  <xs:element name="FairValueMeasurementsDetailsScheduleofassetsthataremeasuredatfairvalueonarecurringbasisLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_FairValueMeasurementsDetailsScheduleofassetsthataremeasuredatfairvalueonarecurringbasisLineItems"/>
  <xs:element name="DescriptionofOrganizationandBusinessOperationsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_DescriptionofOrganizationandBusinessOperationsDetailsTable"/>
  <xs:element name="DescriptionofOrganizationandBusinessOperationsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_DescriptionofOrganizationandBusinessOperationsDetailsLineItems"/>
  <xs:element name="netProceedsAreTheAmountOfCashReceived" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_netProceedsAreTheAmountOfCashReceived"/>
  <xs:element name="DeferredUnderwritingFees" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_DeferredUnderwritingFees"/>
  <xs:element name="PercentageOfPublicShares" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ftivu_PercentageOfPublicShares"/>
  <xs:element name="PercentageOfFairmarketValue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_PercentageOfFairmarketValue"/>
  <xs:element name="RedeemInPublicShares" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_RedeemInPublicShares"/>
  <xs:element name="FranchiseAndIncomeTaxesDissolutionExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_FranchiseAndIncomeTaxesDissolutionExpenses"/>
  <xs:element name="RedeemptionPercent" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_RedeemptionPercent"/>
  <xs:element name="ProposedOffering" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_ProposedOffering"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_SummaryofSignificantAccountingPoliciesDetailsTable"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_SummaryofSignificantAccountingPoliciesDetailsLineItems"/>
  <xs:element name="PrivatePlacementToPurchasesSharesOfCommonStock" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_PrivatePlacementToPurchasesSharesOfCommonStock"/>
  <xs:element name="InitialPublicOfferingDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_InitialPublicOfferingDetailsTable"/>
  <xs:element name="InitialPublicOfferingDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_InitialPublicOfferingDetailsLineItems"/>
  <xs:element name="OverAllotmentOptionUnit" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_OverAllotmentOptionUnit"/>
  <xs:element name="PurchasePricePerUnit" type="num:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ftivu_PurchasePricePerUnit"/>
  <xs:element name="StockExercisePrice" type="num:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ftivu_StockExercisePrice"/>
  <xs:element name="PrivatePlacementDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_PrivatePlacementDetailsTable"/>
  <xs:element name="PrivatePlacementDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_PrivatePlacementDetailsLineItems"/>
  <xs:element name="RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_RelatedPartyTransactionsDetailsTable"/>
  <xs:element name="RelatedPartyTransactionsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_RelatedPartyTransactionsDetailsLineItems"/>
  <xs:element name="SponsorShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_SponsorShares"/>
  <xs:element name="CommonStockSubjectToForfeiture" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ftivu_CommonStockSubjectToForfeiture"/>
  <xs:element name="FounderSharesPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_FounderSharesPercentage"/>
  <xs:element name="FounderSharesShortTermSubjectToForfeiture" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_FounderSharesShortTermSubjectToForfeiture"/>
  <xs:element name="ServicesFees" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_ServicesFees"/>
  <xs:element name="WorkingCapitalLoan" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_WorkingCapitalLoan"/>
  <xs:element name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_CommitmentsandContingenciesDetailsTable"/>
  <xs:element name="CommitmentsandContingenciesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_CommitmentsandContingenciesDetailsLineItems"/>
  <xs:element name="DeferredFeeValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_DeferredFeeValue"/>
  <xs:element name="CommonStockDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_CommonStockDescription"/>
  <xs:element name="StockholdersEquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_StockholdersEquityDetailsTable"/>
  <xs:element name="StockholdersEquityDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_StockholdersEquityDetailsLineItems"/>
  <xs:element name="CommonStockConversionBasisPercent" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_CommonStockConversionBasisPercent"/>
  <xs:element name="WarrantExpires" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_WarrantExpires"/>
  <xs:element name="AgreementDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_AgreementDescription"/>
  <xs:element name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ftivu_SubsequentEventsDetailsTable"/>
  <xs:element name="SubsequentEventsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_SubsequentEventsDetailsLineItems"/>
  <xs:element name="DeferredUnderwritersCommission" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ftivu_DeferredUnderwritersCommission"/>
  <xs:element name="CantorFitzgeraldAndCoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_CantorFitzgeraldAndCoMember"/>
  <xs:element name="ClassAAndClassBNonredeemableCommonStockMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_ClassAAndClassBNonredeemableCommonStockMember"/>
  <xs:element name="ClassARedeemableCommonStockMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_ClassARedeemableCommonStockMember"/>
  <xs:element name="FounderSharesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_FounderSharesMember"/>
  <xs:element name="NonRedeemableClassCommonStockMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_NonRedeemableClassCommonStockMember"/>
  <xs:element name="RedeemableClassACommonStockMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_RedeemableClassACommonStockMember"/>
  <xs:element name="StockSubscriptionReceivableFromStockholderMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_StockSubscriptionReceivableFromStockholderMember"/>
  <xs:element name="WellsFargoSecuritiesLLCMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_WellsFargoSecuritiesLLCMember"/>
  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ftivu_DocumentAndEntityInformationAbstract"/>
</xs:schema>
