Finding the Fourth Proportional to 222.72, 333.98 and 100.82

Step by Step Solution

1. Step 1: Write the proportion equation
   222.72 : 333.98 = 100.82 : x
2. Step 2: Convert to fraction form
   222.72/333.98 = 100.82/x
3. Step 3: Cross multiply
   222.72x = 333.98 × 100.82
4. Step 4: Simplify right side
   222.72x = 33,671.86
5. Step 5: Solve for x
   x = 33,671.86/222.72
6. Step 6: Final answer
   x = 151.18