Finding the Fourth Proportional to 99,141,535.46, 136,818,398.59 and 54,486,697.28

Step by Step Solution

1. Step 1: Write the proportion equation
   99,141,535.46 : 136,818,398.59 = 54,486,697.28 : x
2. Step 2: Convert to fraction form
   99,141,535.46/136,818,398.59 = 54,486,697.28/x
3. Step 3: Cross multiply
   99,141,535.46x = 136,818,398.59 × 54,486,697.28
4. Step 4: Simplify right side
   99,141,535.46x = 7,454,782,665,487,400
5. Step 5: Solve for x
   x = 7,454,782,665,487,400/99,141,535.46
6. Step 6: Final answer
   x = 75,193,334.77