Finding the Fourth Proportional to 31,025.73, 42,815.48 and 16,878.54

Step by Step Solution

1. Step 1: Write the proportion equation
   31,025.73 : 42,815.48 = 16,878.54 : x
2. Step 2: Convert to fraction form
   31,025.73/42,815.48 = 16,878.54/x
3. Step 3: Cross multiply
   31,025.73x = 42,815.48 × 16,878.54
4. Step 4: Simplify right side
   31,025.73x = 722,662,707.41
5. Step 5: Solve for x
   x = 722,662,707.41/31,025.73
6. Step 6: Final answer
   x = 23,292.37