Finding the Fourth Proportional to 142.01, 212.92 and 50.69

Step by Step Solution

1. Step 1: Write the proportion equation
   142.01 : 212.92 = 50.69 : x
2. Step 2: Convert to fraction form
   142.01/212.92 = 50.69/x
3. Step 3: Cross multiply
   142.01x = 212.92 × 50.69
4. Step 4: Simplify right side
   142.01x = 10,791.72
5. Step 5: Solve for x
   x = 10,791.72/142.01
6. Step 6: Final answer
   x = 75.99