Looks like the ProvisionedGB was a custom VI property that I imported. See calculation below. Even with using 'VM used' my totals are 14TB off.
VM Provisioined (TB) 185.5294361954238411271944642
VM Used (TB) 90.74842126356998051051050425
Datastore Provisioned (TB) 76.7400119781494140625
# ProvisionedGB
New-VIProperty-NameProvisionedGB-ObjectTypeDatastore-Value {
param($ds)
[Math]::Round(($ds.ExtensionData.Summary.Capacity -$ds.ExtensionData.Summary.FreeSpace +$ds.ExtensionData.Summary.Uncommitted)/1GB,1)
} -BasedONextensionProperty 'Summary' -Force