Finding the Fourth Proportional to 35,571.88, 49,092.42 and 20,665

Step by Step Solution

1. Step 1: Write the proportion equation
   35,571.88 : 49,092.42 = 20,665 : x
2. Step 2: Convert to fraction form
   35,571.88/49,092.42 = 20,665/x
3. Step 3: Cross multiply
   35,571.88x = 49,092.42 × 20,665
4. Step 4: Simplify right side
   35,571.88x = 1,014,494,859.30
5. Step 5: Solve for x
   x = 1,014,494,859.30/35,571.88
6. Step 6: Final answer
   x = 28,519.57