Finding the Fourth Proportional to 80,659.02, 121,037.14 and 28,105.42

Step by Step Solution

1. Step 1: Write the proportion equation
   80,659.02 : 121,037.14 = 28,105.42 : x
2. Step 2: Convert to fraction form
   80,659.02/121,037.14 = 28,105.42/x
3. Step 3: Cross multiply
   80,659.02x = 121,037.14 × 28,105.42
4. Step 4: Simplify right side
   80,659.02x = 3,401,799,655.30
5. Step 5: Solve for x
   x = 3,401,799,655.30/80,659.02
6. Step 6: Final answer
   x = 42,175.07