Finding the Fourth Proportional to 99,708,616.72, 137,620,849.33 and 58,468,795.12

Step by Step Solution

1. Step 1: Write the proportion equation
   99,708,616.72 : 137,620,849.33 = 58,468,795.12 : x
2. Step 2: Convert to fraction form
   99,708,616.72/137,620,849.33 = 58,468,795.12/x
3. Step 3: Cross multiply
   99,708,616.72x = 137,620,849.33 × 58,468,795.12
4. Step 4: Simplify right side
   99,708,616.72x = 8,046,525,243,716,160
5. Step 5: Solve for x
   x = 8,046,525,243,716,160/99,708,616.72
6. Step 6: Final answer
   x = 80,700,399.91