Finding the Fourth Proportional to 30,812.73, 42,521.55 and 16,665.57

Step by Step Solution

1. Step 1: Write the proportion equation
   30,812.73 : 42,521.55 = 16,665.57 : x
2. Step 2: Convert to fraction form
   30,812.73/42,521.55 = 16,665.57/x
3. Step 3: Cross multiply
   30,812.73x = 42,521.55 × 16,665.57
4. Step 4: Simplify right side
   30,812.73x = 708,645,868.03
5. Step 5: Solve for x
   x = 708,645,868.03/30,812.73
6. Step 6: Final answer
   x = 22,998.48