Finding the Fourth Proportional to 199.94, 275.91 and 111.42

Step by Step Solution

1. Step 1: Write the proportion equation
   199.94 : 275.91 = 111.42 : x
2. Step 2: Convert to fraction form
   199.94/275.91 = 111.42/x
3. Step 3: Cross multiply
   199.94x = 275.91 × 111.42
4. Step 4: Simplify right side
   199.94x = 30,741.89
5. Step 5: Solve for x
   x = 30,741.89/199.94
6. Step 6: Final answer
   x = 153.76