Finding the Fourth Proportional to 88,517.30, 133,035.15 and 86,962.10

Step by Step Solution

1. Step 1: Write the proportion equation
   88,517.30 : 133,035.15 = 86,962.10 : x
2. Step 2: Convert to fraction form
   88,517.30/133,035.15 = 86,962.10/x
3. Step 3: Cross multiply
   88,517.30x = 133,035.15 × 86,962.10
4. Step 4: Simplify right side
   88,517.30x = 11,569,016,017.82
5. Step 5: Solve for x
   x = 11,569,016,017.82/88,517.30
6. Step 6: Final answer
   x = 130,697.80