Finding the Fourth Proportional to 80,911.92, 111,404.37 and 68,788.56

Step by Step Solution

1. Step 1: Write the proportion equation
   80,911.92 : 111,404.37 = 68,788.56 : x
2. Step 2: Convert to fraction form
   80,911.92/111,404.37 = 68,788.56/x
3. Step 3: Cross multiply
   80,911.92x = 111,404.37 × 68,788.56
4. Step 4: Simplify right side
   80,911.92x = 7,663,346,190.01
5. Step 5: Solve for x
   x = 7,663,346,190.01/80,911.92
6. Step 6: Final answer
   x = 94,712.20