Finding the Fourth Proportional to 31,231.71, 43,100.87 and 17,800.79

Step by Step Solution

1. Step 1: Write the proportion equation
   31,231.71 : 43,100.87 = 17,800.79 : x
2. Step 2: Convert to fraction form
   31,231.71/43,100.87 = 17,800.79/x
3. Step 3: Cross multiply
   31,231.71x = 43,100.87 × 17,800.79
4. Step 4: Simplify right side
   31,231.71x = 767,229,535.69
5. Step 5: Solve for x
   x = 767,229,535.69/31,231.71
6. Step 6: Final answer
   x = 24,565.72