Finding the Fourth Proportional to 30,858.80, 42,584.88 and 16,711.52

Step by Step Solution

1. Step 1: Write the proportion equation
   30,858.80 : 42,584.88 = 16,711.52 : x
2. Step 2: Convert to fraction form
   30,858.80/42,584.88 = 16,711.52/x
3. Step 3: Cross multiply
   30,858.80x = 42,584.88 × 16,711.52
4. Step 4: Simplify right side
   30,858.80x = 711,658,073.82
5. Step 5: Solve for x
   x = 711,658,073.82/30,858.80
6. Step 6: Final answer
   x = 23,061.75