Finding the Fourth Proportional to 80,693.75, 121,041.23 and 28,103.10

Step by Step Solution

1. Step 1: Write the proportion equation
   80,693.75 : 121,041.23 = 28,103.10 : x
2. Step 2: Convert to fraction form
   80,693.75/121,041.23 = 28,103.10/x
3. Step 3: Cross multiply
   80,693.75x = 121,041.23 × 28,103.10
4. Step 4: Simplify right side
   80,693.75x = 3,401,633,650.30
5. Step 5: Solve for x
   x = 3,401,633,650.30/80,693.75
6. Step 6: Final answer
   x = 42,154.86