Finding the Fourth Proportional to 31,574.25, 43,567.50 and 18,142.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,574.25 : 43,567.50 = 18,142.91 : x
2. Step 2: Convert to fraction form
   31,574.25/43,567.50 = 18,142.91/x
3. Step 3: Cross multiply
   31,574.25x = 43,567.50 × 18,142.91
4. Step 4: Simplify right side
   31,574.25x = 790,441,013.59
5. Step 5: Solve for x
   x = 790,441,013.59/31,574.25
6. Step 6: Final answer
   x = 25,034.36