If I had to guess, the query should be:
SELECT VendorPayables.[Vendor#], Vendors.[Vendor Name], Sum(VendorPayables.InvoiceTotal) AS SumOfInvoiceTotal, Sum(VendorPayables.InvoicePersonal) AS SumOfInvoicePersonal, Sum(VendorPayables.InvoiceAuto) AS SumOfInvoiceAuto
FROM VendorPayables INNER JOIN Vendors ON VendorPayables.[Vendor#] = Vendors.[Vendor#]
GROUP BY VendorPayables.[Vendor#], Vendors.[Vendor Name];