Finding the Fourth Proportional to 99,403,362.38, 137,175,332.55 and 54,748,477.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,403,362.38 : 137,175,332.55 = 54,748,477.10 : x
2. Step 2: Convert to fraction form
   99,403,362.38/137,175,332.55 = 54,748,477.10/x
3. Step 3: Cross multiply
   99,403,362.38x = 137,175,332.55 × 54,748,477.10
4. Step 4: Simplify right side
   99,403,362.38x = 7,510,140,552,798,560
5. Step 5: Solve for x
   x = 7,510,140,552,798,560/99,403,362.38
6. Step 6: Final answer
   x = 75,552,178.25