Finding the Fourth Proportional to 30,783.52, 42,480.96 and 17,171.68

Step by Step Solution

1. Step 1: Write the proportion equation
   30,783.52 : 42,480.96 = 17,171.68 : x
2. Step 2: Convert to fraction form
   30,783.52/42,480.96 = 17,171.68/x
3. Step 3: Cross multiply
   30,783.52x = 42,480.96 × 17,171.68
4. Step 4: Simplify right side
   30,783.52x = 729,469,451.21
5. Step 5: Solve for x
   x = 729,469,451.21/30,783.52
6. Step 6: Final answer
   x = 23,696.75