Finding the Fourth Proportional to 141.94, 212.42 and 123.72

Step by Step Solution

1. Step 1: Write the proportion equation
   141.94 : 212.42 = 123.72 : x
2. Step 2: Convert to fraction form
   141.94/212.42 = 123.72/x
3. Step 3: Cross multiply
   141.94x = 212.42 × 123.72
4. Step 4: Simplify right side
   141.94x = 26,280.60
5. Step 5: Solve for x
   x = 26,280.60/141.94
6. Step 6: Final answer
   x = 185.15