Finding the Fourth Proportional to 30,808.73, 42,516.17 and 16,661.69

Step by Step Solution

1. Step 1: Write the proportion equation
   30,808.73 : 42,516.17 = 16,661.69 : x
2. Step 2: Convert to fraction form
   30,808.73/42,516.17 = 16,661.69/x
3. Step 3: Cross multiply
   30,808.73x = 42,516.17 × 16,661.69
4. Step 4: Simplify right side
   30,808.73x = 708,391,073.60
5. Step 5: Solve for x
   x = 708,391,073.60/30,808.73
6. Step 6: Final answer
   x = 22,993.20