Finding the Fourth Proportional to 88,128,920.10, 132,193,380.15 and 82,156,952.10

Step by Step Solution

1. Step 1: Write the proportion equation
   88,128,920.10 : 132,193,380.15 = 82,156,952.10 : x
2. Step 2: Convert to fraction form
   88,128,920.10/132,193,380.15 = 82,156,952.10/x
3. Step 3: Cross multiply
   88,128,920.10x = 132,193,380.15 × 82,156,952.10
4. Step 4: Simplify right side
   88,128,920.10x = 10,860,605,200,920,640
5. Step 5: Solve for x
   x = 10,860,605,200,920,640/88,128,920.10
6. Step 6: Final answer
   x = 123,235,428.15