Finding the Fourth Proportional to 30,680.05, 42,336.92 and 17,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,680.05 : 42,336.92 = 17,250.50 : x
2. Step 2: Convert to fraction form
   30,680.05/42,336.92 = 17,250.50/x
3. Step 3: Cross multiply
   30,680.05x = 42,336.92 × 17,250.50
4. Step 4: Simplify right side
   30,680.05x = 730,332,887.53
5. Step 5: Solve for x
   x = 730,332,887.53/30,680.05
6. Step 6: Final answer
   x = 23,804.82