Finding the Fourth Proportional to 31,030.61, 42,821.39 and 16,883.15

Step by Step Solution

1. Step 1: Write the proportion equation
   31,030.61 : 42,821.39 = 16,883.15 : x
2. Step 2: Convert to fraction form
   31,030.61/42,821.39 = 16,883.15/x
3. Step 3: Cross multiply
   31,030.61x = 42,821.39 × 16,883.15
4. Step 4: Simplify right side
   31,030.61x = 722,959,778.68
5. Step 5: Solve for x
   x = 722,959,778.68/31,030.61
6. Step 6: Final answer
   x = 23,298.28