Finding the Fourth Proportional to 99,123,756.48, 136,792,499.04 and 57,872,387.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,123,756.48 : 136,792,499.04 = 57,872,387.52 : x
2. Step 2: Convert to fraction form
   99,123,756.48/136,792,499.04 = 57,872,387.52/x
3. Step 3: Cross multiply
   99,123,756.48x = 136,792,499.04 × 57,872,387.52
4. Step 4: Simplify right side
   99,123,756.48x = 7,916,508,514,272,108
5. Step 5: Solve for x
   x = 7,916,508,514,272,108/99,123,756.48
6. Step 6: Final answer
   x = 79,864,896.12