Finding the Fourth Proportional to 141.50, 212.16 and 100.82

Step by Step Solution

1. Step 1: Write the proportion equation
   141.50 : 212.16 = 100.82 : x
2. Step 2: Convert to fraction form
   141.50/212.16 = 100.82/x
3. Step 3: Cross multiply
   141.50x = 212.16 × 100.82
4. Step 4: Simplify right side
   141.50x = 21,389.97
5. Step 5: Solve for x
   x = 21,389.97/141.50
6. Step 6: Final answer
   x = 151.17