Finding the Fourth Proportional to 88,536.30, 132,610.05 and 76,872.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,536.30 : 132,610.05 = 76,872.30 : x
2. Step 2: Convert to fraction form
   88,536.30/132,610.05 = 76,872.30/x
3. Step 3: Cross multiply
   88,536.30x = 132,610.05 × 76,872.30
4. Step 4: Simplify right side
   88,536.30x = 10,194,039,546.62
5. Step 5: Solve for x
   x = 10,194,039,546.62/88,536.30
6. Step 6: Final answer
   x = 115,139.66