Finding the Fourth Proportional to 99,410.39, 137,182.25 and 54,088.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,410.39 : 137,182.25 = 54,088.56 : x
2. Step 2: Convert to fraction form
   99,410.39/137,182.25 = 54,088.56/x
3. Step 3: Cross multiply
   99,410.39x = 137,182.25 × 54,088.56
4. Step 4: Simplify right side
   99,410.39x = 7,419,990,089.62
5. Step 5: Solve for x
   x = 7,419,990,089.62/99,410.39
6. Step 6: Final answer
   x = 74,639.99