Finding the Fourth Proportional to 31,281.20, 43,168.68 and 17,134.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,281.20 : 43,168.68 = 17,134.05 : x
2. Step 2: Convert to fraction form
   31,281.20/43,168.68 = 17,134.05/x
3. Step 3: Cross multiply
   31,281.20x = 43,168.68 × 17,134.05
4. Step 4: Simplify right side
   31,281.20x = 739,654,321.55
5. Step 5: Solve for x
   x = 739,654,321.55/31,281.20
6. Step 6: Final answer
   x = 23,645.33