Finding the Fourth Proportional to 90,352.72, 124,707.56 and 60,139.24

Step by Step Solution

1. Step 1: Write the proportion equation
   90,352.72 : 124,707.56 = 60,139.24 : x
2. Step 2: Convert to fraction form
   90,352.72/124,707.56 = 60,139.24/x
3. Step 3: Cross multiply
   90,352.72x = 124,707.56 × 60,139.24
4. Step 4: Simplify right side
   90,352.72x = 7,499,817,880.65
5. Step 5: Solve for x
   x = 7,499,817,880.65/90,352.72
6. Step 6: Final answer
   x = 83,006.00