Company Book Value and investor return - fire sale time

I will use the following example to demonstrate the question:
If a companys book value per share was 4.00, (ie the total assets minus total liabilities equal $4billion, and 4 billion shares had been issued), what would happen in the company went under and was sold off??? Current market cap in this example is $1.25billion, not sure if its relevant.

on average how many dollars per share would the share holders receive per share??
What other factors are involved??

I think there's a mathematical problem with your question. Net assets of $4bill with 4bill shares on issue would make a book value per share of $1 (ie. $4bill/4bill=1).

In terms of a wind up, amongst other things, you'd have to consider the impact of intangible assets (and perhaps contingent liabilities) and the fact that the balance sheet would have been prepared on a going concern basis (at this point valuation methodology for things like inventory becomes relevant, if material).

sorry, made a typo, assuming 1million shares were issued, book value was $4.

what have recent company liquidation/sell offs/wind ups, (whatever we refer to them as) resulted in terms of returns to share holders?