Finding the Fourth Proportional to 31,101.63, 42,920.25 and 17,672.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,101.63 : 42,920.25 = 17,672.89 : x
2. Step 2: Convert to fraction form
   31,101.63/42,920.25 = 17,672.89/x
3. Step 3: Cross multiply
   31,101.63x = 42,920.25 × 17,672.89
4. Step 4: Simplify right side
   31,101.63x = 758,524,857.02
5. Step 5: Solve for x
   x = 758,524,857.02/31,101.63
6. Step 6: Final answer
   x = 24,388.59