Finding the Fourth Proportional to 42,040.17, 58,019.54 and 31,411.35

Step by Step Solution

1. Step 1: Write the proportion equation
   42,040.17 : 58,019.54 = 31,411.35 : x
2. Step 2: Convert to fraction form
   42,040.17/58,019.54 = 31,411.35/x
3. Step 3: Cross multiply
   42,040.17x = 58,019.54 × 31,411.35
4. Step 4: Simplify right side
   42,040.17x = 1,822,471,920.72
5. Step 5: Solve for x
   x = 1,822,471,920.72/42,040.17
6. Step 6: Final answer
   x = 43,350.73