Finding the Fourth Proportional to 31,144.56, 42,978.15 and 17,713.92

Step by Step Solution

1. Step 1: Write the proportion equation
   31,144.56 : 42,978.15 = 17,713.92 : x
2. Step 2: Convert to fraction form
   31,144.56/42,978.15 = 17,713.92/x
3. Step 3: Cross multiply
   31,144.56x = 42,978.15 × 17,713.92
4. Step 4: Simplify right side
   31,144.56x = 761,311,510.85
5. Step 5: Solve for x
   x = 761,311,510.85/31,144.56
6. Step 6: Final answer
   x = 24,444.45