Finding the Fourth Proportional to 111.16, 166.86 and 50.34

Step by Step Solution

1. Step 1: Write the proportion equation
   111.16 : 166.86 = 50.34 : x
2. Step 2: Convert to fraction form
   111.16/166.86 = 50.34/x
3. Step 3: Cross multiply
   111.16x = 166.86 × 50.34
4. Step 4: Simplify right side
   111.16x = 8,399.73
5. Step 5: Solve for x
   x = 8,399.73/111.16
6. Step 6: Final answer
   x = 75.56