Finding the Fourth Proportional to 83.05, 114.61 and 50.30

Step by Step Solution

1. Step 1: Write the proportion equation
   83.05 : 114.61 = 50.30 : x
2. Step 2: Convert to fraction form
   83.05/114.61 = 50.30/x
3. Step 3: Cross multiply
   83.05x = 114.61 × 50.30
4. Step 4: Simplify right side
   83.05x = 5,764.88
5. Step 5: Solve for x
   x = 5,764.88/83.05
6. Step 6: Final answer
   x = 69.41