fourth, forth

Fourth or fourth means the item in a series between the third and the fifth--
This is the fourth time we have seen this movie.
Their child is in the fourth grade.

Forth or forth ( rhymes with fourth ) means out, forward or away--
"She brought forth her first born son..."
"Four score and seven years ago our fathers brought forth on this continent a new nation..."
Come forth and be recognized.

 Now that you know that, you can say--
"For the fourth time, he came forth and granted an interview."

Note--"forthcoming" means expected soon; about to appear or be delivered--
No explanation will be forthcoming.
The forthcoming play contains mature themes.
"Coming forth" means stepping out of hiding, or making a public statement--
The mayor thanked him for coming forth and making a statement."
"Coming fourth" means coming between third and fifth--
He was tired of always coming fourth in the race.