Finding the Fourth Proportional to 109,728.50, 151,425.34 and 59,427.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,728.50 : 151,425.34 = 59,427.50 : x
2. Step 2: Convert to fraction form
   109,728.50/151,425.34 = 59,427.50/x
3. Step 3: Cross multiply
   109,728.50x = 151,425.34 × 59,427.50
4. Step 4: Simplify right side
   109,728.50x = 8,998,829,392.85
5. Step 5: Solve for x
   x = 8,998,829,392.85/109,728.50
6. Step 6: Final answer
   x = 82,009.96