Finding the Fourth Proportional to 80,687.82, 121,048.15 and 28,101.41

Step by Step Solution

1. Step 1: Write the proportion equation
   80,687.82 : 121,048.15 = 28,101.41 : x
2. Step 2: Convert to fraction form
   80,687.82/121,048.15 = 28,101.41/x
3. Step 3: Cross multiply
   80,687.82x = 121,048.15 × 28,101.41
4. Step 4: Simplify right side
   80,687.82x = 3,401,623,692.89
5. Step 5: Solve for x
   x = 3,401,623,692.89/80,687.82
6. Step 6: Final answer
   x = 42,157.83