Finding the Fourth Proportional to 80,796.72, 121,201.56 and 28,205.04

Step by Step Solution

1. Step 1: Write the proportion equation
   80,796.72 : 121,201.56 = 28,205.04 : x
2. Step 2: Convert to fraction form
   80,796.72/121,201.56 = 28,205.04/x
3. Step 3: Cross multiply
   80,796.72x = 121,201.56 × 28,205.04
4. Step 4: Simplify right side
   80,796.72x = 3,418,494,847.86
5. Step 5: Solve for x
   x = 3,418,494,847.86/80,796.72
6. Step 6: Final answer
   x = 42,309.82