Finding the Fourth Proportional to 103,521.31, 142,849.53 and 60,510.87

Step by Step Solution

1. Step 1: Write the proportion equation
   103,521.31 : 142,849.53 = 60,510.87 : x
2. Step 2: Convert to fraction form
   103,521.31/142,849.53 = 60,510.87/x
3. Step 3: Cross multiply
   103,521.31x = 142,849.53 × 60,510.87
4. Step 4: Simplify right side
   103,521.31x = 8,643,949,339.39
5. Step 5: Solve for x
   x = 8,643,949,339.39/103,521.31
6. Step 6: Final answer
   x = 83,499.23