Finding the Fourth Proportional to 30,789.18, 42,485.27 and 17,174.03

Step by Step Solution

1. Step 1: Write the proportion equation
   30,789.18 : 42,485.27 = 17,174.03 : x
2. Step 2: Convert to fraction form
   30,789.18/42,485.27 = 17,174.03/x
3. Step 3: Cross multiply
   30,789.18x = 42,485.27 × 17,174.03
4. Step 4: Simplify right side
   30,789.18x = 729,643,003.24
5. Step 5: Solve for x
   x = 729,643,003.24/30,789.18
6. Step 6: Final answer
   x = 23,698.03