Finding the Fourth Proportional to 31,111.88, 42,932.94 and 17,682.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.88 : 42,932.94 = 17,682.80 : x
2. Step 2: Convert to fraction form
   31,111.88/42,932.94 = 17,682.80/x
3. Step 3: Cross multiply
   31,111.88x = 42,932.94 × 17,682.80
4. Step 4: Simplify right side
   31,111.88x = 759,174,591.43
5. Step 5: Solve for x
   x = 759,174,591.43/31,111.88
6. Step 6: Final answer
   x = 24,401.44