Finding the Fourth Proportional to 31,020.69, 42,808.76 and 16,873.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,020.69 : 42,808.76 = 16,873.63 : x
2. Step 2: Convert to fraction form
   31,020.69/42,808.76 = 16,873.63/x
3. Step 3: Cross multiply
   31,020.69x = 42,808.76 × 16,873.63
4. Step 4: Simplify right side
   31,020.69x = 722,339,177.00
5. Step 5: Solve for x
   x = 722,339,177.00/31,020.69
6. Step 6: Final answer
   x = 23,285.72