Finding the Fourth Proportional to 80,910.09, 111,653.71 and 50,712.14

Step by Step Solution

1. Step 1: Write the proportion equation
   80,910.09 : 111,653.71 = 50,712.14 : x
2. Step 2: Convert to fraction form
   80,910.09/111,653.71 = 50,712.14/x
3. Step 3: Cross multiply
   80,910.09x = 111,653.71 × 50,712.14
4. Step 4: Simplify right side
   80,910.09x = 5,662,198,725.39
5. Step 5: Solve for x
   x = 5,662,198,725.39/80,910.09
6. Step 6: Final answer
   x = 69,981.37