If cell “E19” is 78.359272 in degrees decimal then:
CONCATENATE(TEXT(INT(E19),"##° "),TEXT(INT((E19-INT(E19))*60),"##'"),TEXT(MOD((E19-INT(E19))*60,INT((E19-INT(E19))*60))*60,"##.##"),"""")
Will return:
78° 21' 33.38"
It may seem complicated but it give the exact format to put in to Google Earth or similar software. U can do all your calculations in decimal. If u use radians u must convert to degrees before applying the formula.