Finding the Fourth Proportional to 191.34, 264.15 and 162.18

Step by Step Solution

1. Step 1: Write the proportion equation
   191.34 : 264.15 = 162.18 : x
2. Step 2: Convert to fraction form
   191.34/264.15 = 162.18/x
3. Step 3: Cross multiply
   191.34x = 264.15 × 162.18
4. Step 4: Simplify right side
   191.34x = 42,839.85
5. Step 5: Solve for x
   x = 42,839.85/191.34
6. Step 6: Final answer
   x = 223.89