Finding the Fourth Proportional to 31,021.16, 42,808.84 and 16,873.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,021.16 : 42,808.84 = 16,873.68 : x
2. Step 2: Convert to fraction form
   31,021.16/42,808.84 = 16,873.68/x
3. Step 3: Cross multiply
   31,021.16x = 42,808.84 × 16,873.68
4. Step 4: Simplify right side
   31,021.16x = 722,342,667.33
5. Step 5: Solve for x
   x = 722,342,667.33/31,021.16
6. Step 6: Final answer
   x = 23,285.48