Finding the Fourth Proportional to 31,291.16, 43,181.86 and 17,143.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,291.16 : 43,181.86 = 17,143.96 : x
2. Step 2: Convert to fraction form
   31,291.16/43,181.86 = 17,143.96/x
3. Step 3: Cross multiply
   31,291.16x = 43,181.86 × 17,143.96
4. Step 4: Simplify right side
   31,291.16x = 740,308,080.57
5. Step 5: Solve for x
   x = 740,308,080.57/31,291.16
6. Step 6: Final answer
   x = 23,658.70