Finding the Fourth Proportional to 31,659.76, 43,687.52 and 17,512.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,659.76 : 43,687.52 = 17,512.30 : x
2. Step 2: Convert to fraction form
   31,659.76/43,687.52 = 17,512.30/x
3. Step 3: Cross multiply
   31,659.76x = 43,687.52 × 17,512.30
4. Step 4: Simplify right side
   31,659.76x = 765,068,956.50
5. Step 5: Solve for x
   x = 765,068,956.50/31,659.76
6. Step 6: Final answer
   x = 24,165.34