Finding the Fourth Proportional to 101.89, 152.72 and 50.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101.89 : 152.72 = 50.42 : x
2. Step 2: Convert to fraction form
   101.89/152.72 = 50.42/x
3. Step 3: Cross multiply
   101.89x = 152.72 × 50.42
4. Step 4: Simplify right side
   101.89x = 7,700.52
5. Step 5: Solve for x
   x = 7,700.52/101.89
6. Step 6: Final answer
   x = 75.58