NLH Cash game: Hero and Villain both have 100BB stacks (rounding some stuff off for simplicity)

Folded to me on the button,
- I open with a 4BB bet
- Villain 3-bets 3x my raise, 12BB
- I 4-bet 3x his 3-bet, 36BB
- Villain Pushes for the rest of his stack.

Can someone tell me the pot size in BB after each action, and then what my pot odds are to call after villain's push? Thanks.