Finding the Fourth Proportional to 59,142.48, 81,597.24 and 42,149.40

Step by Step Solution

1. Step 1: Write the proportion equation
   59,142.48 : 81,597.24 = 42,149.40 : x
2. Step 2: Convert to fraction form
   59,142.48/81,597.24 = 42,149.40/x
3. Step 3: Cross multiply
   59,142.48x = 81,597.24 × 42,149.40
4. Step 4: Simplify right side
   59,142.48x = 3,439,274,707.66
5. Step 5: Solve for x
   x = 3,439,274,707.66/59,142.48
6. Step 6: Final answer
   x = 58,152.36