Finding the Fourth Proportional to 42,661.57, 58,862.17 and 25,660.35

Step by Step Solution

1. Step 1: Write the proportion equation
   42,661.57 : 58,862.17 = 25,660.35 : x
2. Step 2: Convert to fraction form
   42,661.57/58,862.17 = 25,660.35/x
3. Step 3: Cross multiply
   42,661.57x = 58,862.17 × 25,660.35
4. Step 4: Simplify right side
   42,661.57x = 1,510,423,883.96
5. Step 5: Solve for x
   x = 1,510,423,883.96/42,661.57
6. Step 6: Final answer
   x = 35,404.79