Finding the Fourth Proportional to 82.79, 114.24 and 50.05

Step by Step Solution

1. Step 1: Write the proportion equation
   82.79 : 114.24 = 50.05 : x
2. Step 2: Convert to fraction form
   82.79/114.24 = 50.05/x
3. Step 3: Cross multiply
   82.79x = 114.24 × 50.05
4. Step 4: Simplify right side
   82.79x = 5,718.04
5. Step 5: Solve for x
   x = 5,718.04/82.79
6. Step 6: Final answer
   x = 69.07