Finding the Fourth Proportional to 31,156.55, 42,994.53 and 17,726.55

Step by Step Solution

1. Step 1: Write the proportion equation
   31,156.55 : 42,994.53 = 17,726.55 : x
2. Step 2: Convert to fraction form
   31,156.55/42,994.53 = 17,726.55/x
3. Step 3: Cross multiply
   31,156.55x = 42,994.53 × 17,726.55
4. Step 4: Simplify right side
   31,156.55x = 762,144,470.80
5. Step 5: Solve for x
   x = 762,144,470.80/31,156.55
6. Step 6: Final answer
   x = 24,461.78