Finding the Fourth Proportional to 31,284.42, 43,173.69 and 17,857.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,284.42 : 43,173.69 = 17,857.86 : x
2. Step 2: Convert to fraction form
   31,284.42/43,173.69 = 17,857.86/x
3. Step 3: Cross multiply
   31,284.42x = 43,173.69 × 17,857.86
4. Step 4: Simplify right side
   31,284.42x = 770,989,711.70
5. Step 5: Solve for x
   x = 770,989,711.70/31,284.42
6. Step 6: Final answer
   x = 24,644.53