Finding the Fourth Proportional to 31,020.58, 42,808.16 and 16,873.43

Step by Step Solution

1. Step 1: Write the proportion equation
   31,020.58 : 42,808.16 = 16,873.43 : x
2. Step 2: Convert to fraction form
   31,020.58/42,808.16 = 16,873.43/x
3. Step 3: Cross multiply
   31,020.58x = 42,808.16 × 16,873.43
4. Step 4: Simplify right side
   31,020.58x = 722,320,406.82
5. Step 5: Solve for x
   x = 722,320,406.82/31,020.58
6. Step 6: Final answer
   x = 23,285.20