Finding the Fourth Proportional to 111.83, 167.64 and 99.01

Step by Step Solution

1. Step 1: Write the proportion equation
   111.83 : 167.64 = 99.01 : x
2. Step 2: Convert to fraction form
   111.83/167.64 = 99.01/x
3. Step 3: Cross multiply
   111.83x = 167.64 × 99.01
4. Step 4: Simplify right side
   111.83x = 16,598.69
5. Step 5: Solve for x
   x = 16,598.69/111.83
6. Step 6: Final answer
   x = 148.43