Finding the Fourth Proportional to 83.59, 115.31 and 50.82

Step by Step Solution

1. Step 1: Write the proportion equation
   83.59 : 115.31 = 50.82 : x
2. Step 2: Convert to fraction form
   83.59/115.31 = 50.82/x
3. Step 3: Cross multiply
   83.59x = 115.31 × 50.82
4. Step 4: Simplify right side
   83.59x = 5,860.05
5. Step 5: Solve for x
   x = 5,860.05/83.59
6. Step 6: Final answer
   x = 70.10