Finding the Fourth Proportional to 31,780.53, 43,857.55 and 17,440.47

Step by Step Solution

1. Step 1: Write the proportion equation
   31,780.53 : 43,857.55 = 17,440.47 : x
2. Step 2: Convert to fraction form
   31,780.53/43,857.55 = 17,440.47/x
3. Step 3: Cross multiply
   31,780.53x = 43,857.55 × 17,440.47
4. Step 4: Simplify right side
   31,780.53x = 764,896,337.69
5. Step 5: Solve for x
   x = 764,896,337.69/31,780.53
6. Step 6: Final answer
   x = 24,068.08