Finding the Fourth Proportional to 42,392.57, 58,469.18 and 31,057.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,392.57 : 58,469.18 = 31,057.97 : x
2. Step 2: Convert to fraction form
   42,392.57/58,469.18 = 31,057.97/x
3. Step 3: Cross multiply
   42,392.57x = 58,469.18 × 31,057.97
4. Step 4: Simplify right side
   42,392.57x = 1,815,933,590.73
5. Step 5: Solve for x
   x = 1,815,933,590.73/42,392.57
6. Step 6: Final answer
   x = 42,836.13