Finding the Fourth Proportional to 31,261.96, 43,142 and 17,116.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,261.96 : 43,142 = 17,116.12 : x
2. Step 2: Convert to fraction form
   31,261.96/43,142 = 17,116.12/x
3. Step 3: Cross multiply
   31,261.96x = 43,142 × 17,116.12
4. Step 4: Simplify right side
   31,261.96x = 738,423,649.04
5. Step 5: Solve for x
   x = 738,423,649.04/31,261.96
6. Step 6: Final answer
   x = 23,620.52