Finding the Fourth Proportional to 80,979.68, 111,822.32 and 50,817.32

Step by Step Solution

1. Step 1: Write the proportion equation
   80,979.68 : 111,822.32 = 50,817.32 : x
2. Step 2: Convert to fraction form
   80,979.68/111,822.32 = 50,817.32/x
3. Step 3: Cross multiply
   80,979.68x = 111,822.32 × 50,817.32
4. Step 4: Simplify right side
   80,979.68x = 5,682,510,618.58
5. Step 5: Solve for x
   x = 5,682,510,618.58/80,979.68
6. Step 6: Final answer
   x = 70,172.06