I doubt Path of Fortune exists. I have never found any evidence this is a song on its own. Maybe it's the working title of Road to Joy?
There was a brief glimpse of sheet music for a song called Path of Fortune in the March Full Moon video, where they also show the contrabass sheet music for the Playing for Time recording sessions.
(More tangentially, I would’ve expected PG to mention the working title when he introduced Road to Joy, since he did mention Pukka, too.)
Of course, could be just a working title for Road to Joy. Both Playing for Time and Road to Joy were conducted by Metcalfe (not that this proves anything either way), so they could have been part of the same recording session and PG just might have changed the name to Road to Joy when the lyrics and the refrain in particular became clearer.