Finding the Fourth Proportional to 111.34, 166.89 and 50.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111.34 : 166.89 = 50.35 : x
2. Step 2: Convert to fraction form
   111.34/166.89 = 50.35/x
3. Step 3: Cross multiply
   111.34x = 166.89 × 50.35
4. Step 4: Simplify right side
   111.34x = 8,402.91
5. Step 5: Solve for x
   x = 8,402.91/111.34
6. Step 6: Final answer
   x = 75.47