* 4e (pronounced "katr-i-em") - This is the most common way to write "4th" in French, and it is used for ordinal numbers like "4th place", "4th grade", etc.
* quatrième (pronounced "ka-tri-em") - This is a more formal way to say "4th" and is often used for things like "the 4th of July" or "the 4th floor."
So, depending on the situation, you could use either "4e" or "quatrième" to express "4th" in French.