Finding the Fourth Proportional to 99,658.72, 137,529.69 and 54,337.46

Step by Step Solution

1. Step 1: Write the proportion equation
   99,658.72 : 137,529.69 = 54,337.46 : x
2. Step 2: Convert to fraction form
   99,658.72/137,529.69 = 54,337.46/x
3. Step 3: Cross multiply
   99,658.72x = 137,529.69 × 54,337.46
4. Step 4: Simplify right side
   99,658.72x = 7,473,014,373.01
5. Step 5: Solve for x
   x = 7,473,014,373.01/99,658.72
6. Step 6: Final answer
   x = 74,986.06