Finding the Fourth Proportional to 30,757.72, 42,445.65 and 16,610.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,757.72 : 42,445.65 = 16,610.56 : x
2. Step 2: Convert to fraction form
   30,757.72/42,445.65 = 16,610.56/x
3. Step 3: Cross multiply
   30,757.72x = 42,445.65 × 16,610.56
4. Step 4: Simplify right side
   30,757.72x = 705,046,016.06
5. Step 5: Solve for x
   x = 705,046,016.06/30,757.72
6. Step 6: Final answer
   x = 22,922.57