Finding the Fourth Proportional to 102,796.07, 141,859.55 and 60,355.31

Step by Step Solution

1. Step 1: Write the proportion equation
   102,796.07 : 141,859.55 = 60,355.31 : x
2. Step 2: Convert to fraction form
   102,796.07/141,859.55 = 60,355.31/x
3. Step 3: Cross multiply
   102,796.07x = 141,859.55 × 60,355.31
4. Step 4: Simplify right side
   102,796.07x = 8,561,976,558.30
5. Step 5: Solve for x
   x = 8,561,976,558.30/102,796.07
6. Step 6: Final answer
   x = 83,290.90