Finding the Fourth Proportional to 141.10, 211.59 and 100.55

Step by Step Solution

1. Step 1: Write the proportion equation
   141.10 : 211.59 = 100.55 : x
2. Step 2: Convert to fraction form
   141.10/211.59 = 100.55/x
3. Step 3: Cross multiply
   141.10x = 211.59 × 100.55
4. Step 4: Simplify right side
   141.10x = 21,275.90
5. Step 5: Solve for x
   x = 21,275.90/141.10
6. Step 6: Final answer
   x = 150.79