Finding the Fourth Proportional to 31,028.56, 42,818.05 and 17,230.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31,028.56 : 42,818.05 = 17,230.03 : x
2. Step 2: Convert to fraction form
   31,028.56/42,818.05 = 17,230.03/x
3. Step 3: Cross multiply
   31,028.56x = 42,818.05 × 17,230.03
4. Step 4: Simplify right side
   31,028.56x = 737,756,286.04
5. Step 5: Solve for x
   x = 737,756,286.04/31,028.56
6. Step 6: Final answer
   x = 23,776.68