Finding the Fourth Proportional to 300.50, 450.78 and 95.03

Step by Step Solution

1. Step 1: Write the proportion equation
   300.50 : 450.78 = 95.03 : x
2. Step 2: Convert to fraction form
   300.50/450.78 = 95.03/x
3. Step 3: Cross multiply
   300.50x = 450.78 × 95.03
4. Step 4: Simplify right side
   300.50x = 42,835.37
5. Step 5: Solve for x
   x = 42,835.37/300.50
6. Step 6: Final answer
   x = 142.55