Finding the Fourth Proportional to 31,498.17, 47,231.87 and 13,743.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,498.17 : 47,231.87 = 13,743.83 : x
2. Step 2: Convert to fraction form
   31,498.17/47,231.87 = 13,743.83/x
3. Step 3: Cross multiply
   31,498.17x = 47,231.87 × 13,743.83
4. Step 4: Simplify right side
   31,498.17x = 649,146,791.86
5. Step 5: Solve for x
   x = 649,146,791.86/31,498.17
6. Step 6: Final answer
   x = 20,609.03