Finding the Fourth Proportional to 31,725.32, 43,780.72 and 17,578.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,725.32 : 43,780.72 = 17,578.12 : x
2. Step 2: Convert to fraction form
   31,725.32/43,780.72 = 17,578.12/x
3. Step 3: Cross multiply
   31,725.32x = 43,780.72 × 17,578.12
4. Step 4: Simplify right side
   31,725.32x = 769,582,749.85
5. Step 5: Solve for x
   x = 769,582,749.85/31,725.32
6. Step 6: Final answer
   x = 24,257.68