Finding the Fourth Proportional to 111.70, 167.55 and 101.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111.70 : 167.55 = 101.98 : x
2. Step 2: Convert to fraction form
   111.70/167.55 = 101.98/x
3. Step 3: Cross multiply
   111.70x = 167.55 × 101.98
4. Step 4: Simplify right side
   111.70x = 17,086.75
5. Step 5: Solve for x
   x = 17,086.75/111.70
6. Step 6: Final answer
   x = 152.97