Finding the Fourth Proportional to 111.51, 167.47 and 101.99

Step by Step Solution

1. Step 1: Write the proportion equation
   111.51 : 167.47 = 101.99 : x
2. Step 2: Convert to fraction form
   111.51/167.47 = 101.99/x
3. Step 3: Cross multiply
   111.51x = 167.47 × 101.99
4. Step 4: Simplify right side
   111.51x = 17,080.43
5. Step 5: Solve for x
   x = 17,080.43/111.51
6. Step 6: Final answer
   x = 153.17