Finding the Fourth Proportional to 99,472,442.10, 137,178,858.72 and 78,614,304.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,472,442.10 : 137,178,858.72 = 78,614,304.02 : x
2. Step 2: Convert to fraction form
   99,472,442.10/137,178,858.72 = 78,614,304.02/x
3. Step 3: Cross multiply
   99,472,442.10x = 137,178,858.72 × 78,614,304.02
4. Step 4: Simplify right side
   99,472,442.10x = 10,784,220,504,530,708
5. Step 5: Solve for x
   x = 10,784,220,504,530,708/99,472,442.10
6. Step 6: Final answer
   x = 108,414,152.47