Finding the Fourth Proportional to 400,847,007.72, 601,123,034.34 and 138,464,792.04

Step by Step Solution

1. Step 1: Write the proportion equation
   400,847,007.72 : 601,123,034.34 = 138,464,792.04 : x
2. Step 2: Convert to fraction form
   400,847,007.72/601,123,034.34 = 138,464,792.04/x
3. Step 3: Cross multiply
   400,847,007.72x = 601,123,034.34 × 138,464,792.04
4. Step 4: Simplify right side
   400,847,007.72x = 83,234,375,940,341,872
5. Step 5: Solve for x
   x = 83,234,375,940,341,872/400,847,007.72
6. Step 6: Final answer
   x = 207,646,244.92