Finding the Fourth Proportional to 35,723.72, 49,298.32 and 20,616.20

Step by Step Solution

1. Step 1: Write the proportion equation
   35,723.72 : 49,298.32 = 20,616.20 : x
2. Step 2: Convert to fraction form
   35,723.72/49,298.32 = 20,616.20/x
3. Step 3: Cross multiply
   35,723.72x = 49,298.32 × 20,616.20
4. Step 4: Simplify right side
   35,723.72x = 1,016,344,024.78
5. Step 5: Solve for x
   x = 1,016,344,024.78/35,723.72
6. Step 6: Final answer
   x = 28,450.12