Finding the Fourth Proportional to 41,398.91, 57,003.98 and 31,204.76

Step by Step Solution

1. Step 1: Write the proportion equation
   41,398.91 : 57,003.98 = 31,204.76 : x
2. Step 2: Convert to fraction form
   41,398.91/57,003.98 = 31,204.76/x
3. Step 3: Cross multiply
   41,398.91x = 57,003.98 × 31,204.76
4. Step 4: Simplify right side
   41,398.91x = 1,778,795,073.90
5. Step 5: Solve for x
   x = 1,778,795,073.90/41,398.91
6. Step 6: Final answer
   x = 42,967.20