Finding the Fourth Proportional to 80,786.77, 121,235.52 and 28,196.25

Step by Step Solution

1. Step 1: Write the proportion equation
   80,786.77 : 121,235.52 = 28,196.25 : x
2. Step 2: Convert to fraction form
   80,786.77/121,235.52 = 28,196.25/x
3. Step 3: Cross multiply
   80,786.77x = 121,235.52 × 28,196.25
4. Step 4: Simplify right side
   80,786.77x = 3,418,387,205.25
5. Step 5: Solve for x
   x = 3,418,387,205.25/80,786.77
6. Step 6: Final answer
   x = 42,313.70