Finding the Fourth Proportional to 131,139,113.70, 196,732,290.15 and 54,469,892.10

Step by Step Solution

1. Step 1: Write the proportion equation
   131,139,113.70 : 196,732,290.15 = 54,469,892.10 : x
2. Step 2: Convert to fraction form
   131,139,113.70/196,732,290.15 = 54,469,892.10/x
3. Step 3: Cross multiply
   131,139,113.70x = 196,732,290.15 × 54,469,892.10
4. Step 4: Simplify right side
   131,139,113.70x = 10,715,986,617,056,394
5. Step 5: Solve for x
   x = 10,715,986,617,056,394/131,139,113.70
6. Step 6: Final answer
   x = 81,714,648.78