Finding the Fourth Proportional to 31,120.22, 42,944.19 and 17,689.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,120.22 : 42,944.19 = 17,689.61 : x
2. Step 2: Convert to fraction form
   31,120.22/42,944.19 = 17,689.61/x
3. Step 3: Cross multiply
   31,120.22x = 42,944.19 × 17,689.61
4. Step 4: Simplify right side
   31,120.22x = 759,665,758.14
5. Step 5: Solve for x
   x = 759,665,758.14/31,120.22
6. Step 6: Final answer
   x = 24,410.68