Finding the Fourth Proportional to 99.30, 136.83 and 75.98

Step by Step Solution

1. Step 1: Write the proportion equation
   99.30 : 136.83 = 75.98 : x
2. Step 2: Convert to fraction form
   99.30/136.83 = 75.98/x
3. Step 3: Cross multiply
   99.30x = 136.83 × 75.98
4. Step 4: Simplify right side
   99.30x = 10,396.40
5. Step 5: Solve for x
   x = 10,396.40/99.30
6. Step 6: Final answer
   x = 104.70