Finding the Fourth Proportional to 111.42, 166.98 and 50.49

Step by Step Solution

1. Step 1: Write the proportion equation
   111.42 : 166.98 = 50.49 : x
2. Step 2: Convert to fraction form
   111.42/166.98 = 50.49/x
3. Step 3: Cross multiply
   111.42x = 166.98 × 50.49
4. Step 4: Simplify right side
   111.42x = 8,430.82
5. Step 5: Solve for x
   x = 8,430.82/111.42
6. Step 6: Final answer
   x = 75.67