Finding the Fourth Proportional to 30,764.91, 42,455.59 and 16,617.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,764.91 : 42,455.59 = 16,617.75 : x
2. Step 2: Convert to fraction form
   30,764.91/42,455.59 = 16,617.75/x
3. Step 3: Cross multiply
   30,764.91x = 42,455.59 × 16,617.75
4. Step 4: Simplify right side
   30,764.91x = 705,516,380.72
5. Step 5: Solve for x
   x = 705,516,380.72/30,764.91
6. Step 6: Final answer
   x = 22,932.50