Finding the Fourth Proportional to 35,728.76, 49,294.33 and 20,619.42

Step by Step Solution

1. Step 1: Write the proportion equation
   35,728.76 : 49,294.33 = 20,619.42 : x
2. Step 2: Convert to fraction form
   35,728.76/49,294.33 = 20,619.42/x
3. Step 3: Cross multiply
   35,728.76x = 49,294.33 × 20,619.42
4. Step 4: Simplify right side
   35,728.76x = 1,016,420,493.89
5. Step 5: Solve for x
   x = 1,016,420,493.89/35,728.76
6. Step 6: Final answer
   x = 28,448.24