Finding the Fourth Proportional to 31,145.46, 42,981.23 and 17,716.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,145.46 : 42,981.23 = 17,716.83 : x
2. Step 2: Convert to fraction form
   31,145.46/42,981.23 = 17,716.83/x
3. Step 3: Cross multiply
   31,145.46x = 42,981.23 × 17,716.83
4. Step 4: Simplify right side
   31,145.46x = 761,491,028.21
5. Step 5: Solve for x
   x = 761,491,028.21/31,145.46
6. Step 6: Final answer
   x = 24,449.50