Finding the Fourth Proportional to 89.34, 123.28 and 50.00

Step by Step Solution

1. Step 1: Write the proportion equation
   89.34 : 123.28 = 50.00 : x
2. Step 2: Convert to fraction form
   89.34/123.28 = 50.00/x
3. Step 3: Cross multiply
   89.34x = 123.28 × 50.00
4. Step 4: Simplify right side
   89.34x = 6,163.57
5. Step 5: Solve for x
   x = 6,163.57/89.34
6. Step 6: Final answer
   x = 68.99