Finding the Fourth Proportional to 30,989.50, 42,764.69 and 17,560.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,989.50 : 42,764.69 = 17,560.42 : x
2. Step 2: Convert to fraction form
   30,989.50/42,764.69 = 17,560.42/x
3. Step 3: Cross multiply
   30,989.50x = 42,764.69 × 17,560.42
4. Step 4: Simplify right side
   30,989.50x = 750,965,917.57
5. Step 5: Solve for x
   x = 750,965,917.57/30,989.50
6. Step 6: Final answer
   x = 24,232.91