Finding the Fourth Proportional to 111.44, 167.16 and 42.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111.44 : 167.16 = 42.98 : x
2. Step 2: Convert to fraction form
   111.44/167.16 = 42.98/x
3. Step 3: Cross multiply
   111.44x = 167.16 × 42.98
4. Step 4: Simplify right side
   111.44x = 7,185.51
5. Step 5: Solve for x
   x = 7,185.51/111.44
6. Step 6: Final answer
   x = 64.48