Finding the Fourth Proportional to 31,028.10, 42,818.31 and 16,880.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,028.10 : 42,818.31 = 16,880.82 : x
2. Step 2: Convert to fraction form
   31,028.10/42,818.31 = 16,880.82/x
3. Step 3: Cross multiply
   31,028.10x = 42,818.31 × 16,880.82
4. Step 4: Simplify right side
   31,028.10x = 722,808,183.81
5. Step 5: Solve for x
   x = 722,808,183.81/31,028.10
6. Step 6: Final answer
   x = 23,295.28