Finding the Fourth Proportional to 131,111.15, 196,517.88 and 115,285.55

Step by Step Solution

1. Step 1: Write the proportion equation
   131,111.15 : 196,517.88 = 115,285.55 : x
2. Step 2: Convert to fraction form
   131,111.15/196,517.88 = 115,285.55/x
3. Step 3: Cross multiply
   131,111.15x = 196,517.88 × 115,285.55
4. Step 4: Simplify right side
   131,111.15x = 22,655,670,898.04
5. Step 5: Solve for x
   x = 22,655,670,898.04/131,111.15
6. Step 6: Final answer
   x = 172,797.45