Finding the Fourth Proportional to 31,872.56, 43,980.56 and 17,724.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,872.56 : 43,980.56 = 17,724.56 : x
2. Step 2: Convert to fraction form
   31,872.56/43,980.56 = 17,724.56/x
3. Step 3: Cross multiply
   31,872.56x = 43,980.56 × 17,724.56
4. Step 4: Simplify right side
   31,872.56x = 779,536,074.55
5. Step 5: Solve for x
   x = 779,536,074.55/31,872.56
6. Step 6: Final answer
   x = 24,457.91