Finding the Fourth Proportional to 99,403,360.38, 137,175,329.79 and 54,748,475.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,403,360.38 : 137,175,329.79 = 54,748,475.10 : x
2. Step 2: Convert to fraction form
   99,403,360.38/137,175,329.79 = 54,748,475.10/x
3. Step 3: Cross multiply
   99,403,360.38x = 137,175,329.79 × 54,748,475.10
4. Step 4: Simplify right side
   99,403,360.38x = 7,510,140,127,342,103
5. Step 5: Solve for x
   x = 7,510,140,127,342,103/99,403,360.38
6. Step 6: Final answer
   x = 75,552,175.49