Finding the Fourth Proportional to 30,870.77, 42,601.82 and 16,723.62

Step by Step Solution

1. Step 1: Write the proportion equation
   30,870.77 : 42,601.82 = 16,723.62 : x
2. Step 2: Convert to fraction form
   30,870.77/42,601.82 = 16,723.62/x
3. Step 3: Cross multiply
   30,870.77x = 42,601.82 × 16,723.62
4. Step 4: Simplify right side
   30,870.77x = 712,456,565.37
5. Step 5: Solve for x
   x = 712,456,565.37/30,870.77
6. Step 6: Final answer
   x = 23,078.68