Finding the Fourth Proportional to 88,515.30, 132,578.55 and 76,851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,515.30 : 132,578.55 = 76,851.30 : x
2. Step 2: Convert to fraction form
   88,515.30/132,578.55 = 76,851.30/x
3. Step 3: Cross multiply
   88,515.30x = 132,578.55 × 76,851.30
4. Step 4: Simplify right side
   88,515.30x = 10,188,833,919.62
5. Step 5: Solve for x
   x = 10,188,833,919.62/88,515.30
6. Step 6: Final answer
   x = 115,108.17