well......it they follow proper accounting procedures, these pledges become a receivable, which is an asset on the balance sheet. If down the road the pledges are not honored, they become doubtful accounts, and eventually bad debt - which is an expense. So.....increasing assets and keeping liabilities low or at a conservative level can result in increased equity. The real question is how that equity is utilized.....
Meanwhile, like any business - if receivables are in arrears, a certain effort has to be put into getting people/entities to pay up. So, whatever is pledged, while individually anonymous, seems to be coming down to congregations themselves, which means that the onus is on them as a unit to pay up, if indeed people pledge funds they do not actually remit.
And, if the congs cannot generate sufficient funds - what then?