Finding the Fourth Proportional to 31,839.42, 43,938.79 and 17,500.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,839.42 : 43,938.79 = 17,500.81 : x
2. Step 2: Convert to fraction form
   31,839.42/43,938.79 = 17,500.81/x
3. Step 3: Cross multiply
   31,839.42x = 43,938.79 × 17,500.81
4. Step 4: Simplify right side
   31,839.42x = 768,964,415.42
5. Step 5: Solve for x
   x = 768,964,415.42/31,839.42
6. Step 6: Final answer
   x = 24,151.33