Finding the Fourth Proportional to 31,414.89, 43,355.04 and 17,990.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,414.89 : 43,355.04 = 17,990.37 : x
2. Step 2: Convert to fraction form
   31,414.89/43,355.04 = 17,990.37/x
3. Step 3: Cross multiply
   31,414.89x = 43,355.04 × 17,990.37
4. Step 4: Simplify right side
   31,414.89x = 779,973,210.96
5. Step 5: Solve for x
   x = 779,973,210.96/31,414.89
6. Step 6: Final answer
   x = 24,828.14