Finding the Fourth Proportional to 80,581.37, 111,166.52 and 53,697.69

Step by Step Solution

1. Step 1: Write the proportion equation
   80,581.37 : 111,166.52 = 53,697.69 : x
2. Step 2: Convert to fraction form
   80,581.37/111,166.52 = 53,697.69/x
3. Step 3: Cross multiply
   80,581.37x = 111,166.52 × 53,697.69
4. Step 4: Simplify right side
   80,581.37x = 5,969,385,060.85
5. Step 5: Solve for x
   x = 5,969,385,060.85/80,581.37
6. Step 6: Final answer
   x = 74,078.98