Finding the Fourth Proportional to 67.81, 101.55 and 50.67

Step by Step Solution

1. Step 1: Write the proportion equation
   67.81 : 101.55 = 50.67 : x
2. Step 2: Convert to fraction form
   67.81/101.55 = 50.67/x
3. Step 3: Cross multiply
   67.81x = 101.55 × 50.67
4. Step 4: Simplify right side
   67.81x = 5,145.54
5. Step 5: Solve for x
   x = 5,145.54/67.81
6. Step 6: Final answer
   x = 75.88