Finding the Fourth Proportional to 89.83, 123.96 and 54.82

Step by Step Solution

1. Step 1: Write the proportion equation
   89.83 : 123.96 = 54.82 : x
2. Step 2: Convert to fraction form
   89.83/123.96 = 54.82/x
3. Step 3: Cross multiply
   89.83x = 123.96 × 54.82
4. Step 4: Simplify right side
   89.83x = 6,795.49
5. Step 5: Solve for x
   x = 6,795.49/89.83
6. Step 6: Final answer
   x = 75.65