Finding the Fourth Proportional to 82.89, 114.37 and 50.15

Step by Step Solution

1. Step 1: Write the proportion equation
   82.89 : 114.37 = 50.15 : x
2. Step 2: Convert to fraction form
   82.89/114.37 = 50.15/x
3. Step 3: Cross multiply
   82.89x = 114.37 × 50.15
4. Step 4: Simplify right side
   82.89x = 5,735.82
5. Step 5: Solve for x
   x = 5,735.82/82.89
6. Step 6: Final answer
   x = 69.20