Finding the Fourth Proportional to 80,918.86, 111,668.04 and 45,108.10

Step by Step Solution

1. Step 1: Write the proportion equation
   80,918.86 : 111,668.04 = 45,108.10 : x
2. Step 2: Convert to fraction form
   80,918.86/111,668.04 = 45,108.10/x
3. Step 3: Cross multiply
   80,918.86x = 111,668.04 × 45,108.10
4. Step 4: Simplify right side
   80,918.86x = 5,037,132,556.78
5. Step 5: Solve for x
   x = 5,037,132,556.78/80,918.86
6. Step 6: Final answer
   x = 62,249.18