Finding the Fourth Proportional to 31,279.38, 43,164.12 and 17,131.92

Step by Step Solution

1. Step 1: Write the proportion equation
   31,279.38 : 43,164.12 = 17,131.92 : x
2. Step 2: Convert to fraction form
   31,279.38/43,164.12 = 17,131.92/x
3. Step 3: Cross multiply
   31,279.38x = 43,164.12 × 17,131.92
4. Step 4: Simplify right side
   31,279.38x = 739,484,250.71
5. Step 5: Solve for x
   x = 739,484,250.71/31,279.38
6. Step 6: Final answer
   x = 23,641.27