
But we're on the FOURTH floor.
The Big Bang Theory Season 12, Episode 5

...if you would be the FOURTH member
of our "Halo" team.
The Big Bang Theory Season 1, Episode 7

Her apartment's on the FOURTH floor,
elevator is broken, you're gonna...
The Big Bang Theory Season 1, Episode 2

...at a Teens for Jesus
Fourth of July hoedown count as a date?
The Big Bang Theory Season 4, Episode 1

so lobby, second, third, FOURTH.
The Big Bang Theory Season 12, Episode 5