Finding the Fourth Proportional to 141.05, 211.24 and 99.82

Step by Step Solution

1. Step 1: Write the proportion equation
   141.05 : 211.24 = 99.82 : x
2. Step 2: Convert to fraction form
   141.05/211.24 = 99.82/x
3. Step 3: Cross multiply
   141.05x = 211.24 × 99.82
4. Step 4: Simplify right side
   141.05x = 21,085.86
5. Step 5: Solve for x
   x = 21,085.86/141.05
6. Step 6: Final answer
   x = 149.49