Finding the Fourth Proportional to 99,411.53, 137,187.83 and 54,089.46

Step by Step Solution

1. Step 1: Write the proportion equation
   99,411.53 : 137,187.83 = 54,089.46 : x
2. Step 2: Convert to fraction form
   99,411.53/137,187.83 = 54,089.46/x
3. Step 3: Cross multiply
   99,411.53x = 137,187.83 × 54,089.46
4. Step 4: Simplify right side
   99,411.53x = 7,420,415,778.50
5. Step 5: Solve for x
   x = 7,420,415,778.50/99,411.53
6. Step 6: Final answer
   x = 74,643.42