Finding the Fourth Proportional to 89.34, 123.30 and 50.52

Step by Step Solution

1. Step 1: Write the proportion equation
   89.34 : 123.30 = 50.52 : x
2. Step 2: Convert to fraction form
   89.34/123.30 = 50.52/x
3. Step 3: Cross multiply
   89.34x = 123.30 × 50.52
4. Step 4: Simplify right side
   89.34x = 6,229.12
5. Step 5: Solve for x
   x = 6,229.12/89.34
6. Step 6: Final answer
   x = 69.72