Finding the Fourth Proportional to 30,640.47, 42,282.71 and 17,029.35

Step by Step Solution

1. Step 1: Write the proportion equation
   30,640.47 : 42,282.71 = 17,029.35 : x
2. Step 2: Convert to fraction form
   30,640.47/42,282.71 = 17,029.35/x
3. Step 3: Cross multiply
   30,640.47x = 42,282.71 × 17,029.35
4. Step 4: Simplify right side
   30,640.47x = 720,047,046.25
5. Step 5: Solve for x
   x = 720,047,046.25/30,640.47
6. Step 6: Final answer
   x = 23,499.87