Finding the Fourth Proportional to 111.93, 167.89 and 51.06

Step by Step Solution

1. Step 1: Write the proportion equation
   111.93 : 167.89 = 51.06 : x
2. Step 2: Convert to fraction form
   111.93/167.89 = 51.06/x
3. Step 3: Cross multiply
   111.93x = 167.89 × 51.06
4. Step 4: Simplify right side
   111.93x = 8,572.46
5. Step 5: Solve for x
   x = 8,572.46/111.93
6. Step 6: Final answer
   x = 76.59