Finding the Fourth Proportional to 71.02, 106.20 and 50.67

Step by Step Solution

1. Step 1: Write the proportion equation
   71.02 : 106.20 = 50.67 : x
2. Step 2: Convert to fraction form
   71.02/106.20 = 50.67/x
3. Step 3: Cross multiply
   71.02x = 106.20 × 50.67
4. Step 4: Simplify right side
   71.02x = 5,381.15
5. Step 5: Solve for x
   x = 5,381.15/71.02
6. Step 6: Final answer
   x = 75.77