Finding the Fourth Proportional to 88,663.30, 132,800.55 and 76,999.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,663.30 : 132,800.55 = 76,999.30 : x
2. Step 2: Convert to fraction form
   88,663.30/132,800.55 = 76,999.30/x
3. Step 3: Cross multiply
   88,663.30x = 132,800.55 × 76,999.30
4. Step 4: Simplify right side
   88,663.30x = 10,225,549,389.62
5. Step 5: Solve for x
   x = 10,225,549,389.62/88,663.30
6. Step 6: Final answer
   x = 115,330.12