Finding the Fourth Proportional to 80,662.12, 120,826.72 and 47,280.82

Step by Step Solution

1. Step 1: Write the proportion equation
   80,662.12 : 120,826.72 = 47,280.82 : x
2. Step 2: Convert to fraction form
   80,662.12/120,826.72 = 47,280.82/x
3. Step 3: Cross multiply
   80,662.12x = 120,826.72 × 47,280.82
4. Step 4: Simplify right side
   80,662.12x = 5,712,786,399.51
5. Step 5: Solve for x
   x = 5,712,786,399.51/80,662.12
6. Step 6: Final answer
   x = 70,823.66