Finding the Fourth Proportional to 111,026.58, 153,217.89 and 60,724.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,026.58 : 153,217.89 = 60,724.50 : x
2. Step 2: Convert to fraction form
   111,026.58/153,217.89 = 60,724.50/x
3. Step 3: Cross multiply
   111,026.58x = 153,217.89 × 60,724.50
4. Step 4: Simplify right side
   111,026.58x = 9,304,079,761.31
5. Step 5: Solve for x
   x = 9,304,079,761.31/111,026.58
6. Step 6: Final answer
   x = 83,800.47