Finding the Fourth Proportional to 99,733.56, 137,585.96 and 59,424.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,733.56 : 137,585.96 = 59,424.72 : x
2. Step 2: Convert to fraction form
   99,733.56/137,585.96 = 59,424.72/x
3. Step 3: Cross multiply
   99,733.56x = 137,585.96 × 59,424.72
4. Step 4: Simplify right side
   99,733.56x = 8,176,007,148.93
5. Step 5: Solve for x
   x = 8,176,007,148.93/99,733.56
6. Step 6: Final answer
   x = 81,978.49