Finding the Fourth Proportional to 30,763.72, 42,453.96 and 16,616.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,763.72 : 42,453.96 = 16,616.56 : x
2. Step 2: Convert to fraction form
   30,763.72/42,453.96 = 16,616.56/x
3. Step 3: Cross multiply
   30,763.72x = 42,453.96 × 16,616.56
4. Step 4: Simplify right side
   30,763.72x = 705,438,773.58
5. Step 5: Solve for x
   x = 705,438,773.58/30,763.72
6. Step 6: Final answer
   x = 22,930.87