Finding the Fourth Proportional to 42,393.57, 58,470.55 and 31,058.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,393.57 : 58,470.55 = 31,058.97 : x
2. Step 2: Convert to fraction form
   42,393.57/58,470.55 = 31,058.97/x
3. Step 3: Cross multiply
   42,393.57x = 58,470.55 × 31,058.97
4. Step 4: Simplify right side
   42,393.57x = 1,816,035,058.33
5. Step 5: Solve for x
   x = 1,816,035,058.33/42,393.57
6. Step 6: Final answer
   x = 42,837.51