Finding the Fourth Proportional to 80,622.72, 120,955.86 and 28,035.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,622.72 : 120,955.86 = 28,035.12 : x
2. Step 2: Convert to fraction form
   80,622.72/120,955.86 = 28,035.12/x
3. Step 3: Cross multiply
   80,622.72x = 120,955.86 × 28,035.12
4. Step 4: Simplify right side
   80,622.72x = 3,391,012,049.80
5. Step 5: Solve for x
   x = 3,391,012,049.80/80,622.72
6. Step 6: Final answer
   x = 42,060.25