Finding the Fourth Proportional to 80,957.60, 111,676.56 and 47,417.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,957.60 : 111,676.56 = 47,417.12 : x
2. Step 2: Convert to fraction form
   80,957.60/111,676.56 = 47,417.12/x
3. Step 3: Cross multiply
   80,957.60x = 111,676.56 × 47,417.12
4. Step 4: Simplify right side
   80,957.60x = 5,295,380,846.71
5. Step 5: Solve for x
   x = 5,295,380,846.71/80,957.60
6. Step 6: Final answer
   x = 65,409.31