Finding the Fourth Proportional to 40,658.50, 56,162.33 and 31,215.06

Step by Step Solution

1. Step 1: Write the proportion equation
   40,658.50 : 56,162.33 = 31,215.06 : x
2. Step 2: Convert to fraction form
   40,658.50/56,162.33 = 31,215.06/x
3. Step 3: Cross multiply
   40,658.50x = 56,162.33 × 31,215.06
4. Step 4: Simplify right side
   40,658.50x = 1,753,110,578.73
5. Step 5: Solve for x
   x = 1,753,110,578.73/40,658.50
6. Step 6: Final answer
   x = 43,117.94