Finding the Fourth Proportional to 31,178.38, 43,025.88 and 17,031.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,178.38 : 43,025.88 = 17,031.28 : x
2. Step 2: Convert to fraction form
   31,178.38/43,025.88 = 17,031.28/x
3. Step 3: Cross multiply
   31,178.38x = 43,025.88 × 17,031.28
4. Step 4: Simplify right side
   31,178.38x = 732,785,809.53
5. Step 5: Solve for x
   x = 732,785,809.53/31,178.38
6. Step 6: Final answer
   x = 23,503.01