As for FORTRAN in the wild, there are many simulations used by the US government still in use, example like Enhanced Surface-to-Air Missile Simulation (ESAMS).
Would it be a good language to use outside of specialized needs? Probably not.
Would it be a good language to use outside of specialized needs? Probably not.
I've also heard rumours of Julia and even Rust being used (the latter because of the ability to reuse libraries in the browser e.g. for visualisation), but the writers of these codebases (and the Fortran/C/C++/Java) are unusual—Python and R (and for some holdouts, IDL) are what are most people write in (even if those languages call something else).