Finding the Fourth Proportional to 30,469.91, 42,049.37 and 17,040.87

Step by Step Solution

1. Step 1: Write the proportion equation
   30,469.91 : 42,049.37 = 17,040.87 : x
2. Step 2: Convert to fraction form
   30,469.91/42,049.37 = 17,040.87/x
3. Step 3: Cross multiply
   30,469.91x = 42,049.37 × 17,040.87
4. Step 4: Simplify right side
   30,469.91x = 716,557,890.35
5. Step 5: Solve for x
   x = 716,557,890.35/30,469.91
6. Step 6: Final answer
   x = 23,516.91