Finding the Fourth Proportional to 83.69, 115.50 and 50.96

Step by Step Solution

1. Step 1: Write the proportion equation
   83.69 : 115.50 = 50.96 : x
2. Step 2: Convert to fraction form
   83.69/115.50 = 50.96/x
3. Step 3: Cross multiply
   83.69x = 115.50 × 50.96
4. Step 4: Simplify right side
   83.69x = 5,885.30
5. Step 5: Solve for x
   x = 5,885.30/83.69
6. Step 6: Final answer
   x = 70.33