Finding the Fourth Proportional to 31,421.31, 43,361.69 and 17,081.17

Step by Step Solution

1. Step 1: Write the proportion equation
   31,421.31 : 43,361.69 = 17,081.17 : x
2. Step 2: Convert to fraction form
   31,421.31/43,361.69 = 17,081.17/x
3. Step 3: Cross multiply
   31,421.31x = 43,361.69 × 17,081.17
4. Step 4: Simplify right side
   31,421.31x = 740,668,341.30
5. Step 5: Solve for x
   x = 740,668,341.30/31,421.31
6. Step 6: Final answer
   x = 23,572.17