Finding the Fourth Proportional to 75.98, 104.83 and 55.30

Step by Step Solution

1. Step 1: Write the proportion equation
   75.98 : 104.83 = 55.30 : x
2. Step 2: Convert to fraction form
   75.98/104.83 = 55.30/x
3. Step 3: Cross multiply
   75.98x = 104.83 × 55.30
4. Step 4: Simplify right side
   75.98x = 5,797.10
5. Step 5: Solve for x
   x = 5,797.10/75.98
6. Step 6: Final answer
   x = 76.30