Finding the Fourth Proportional to 300,728.65, 450,951.72 and 174,404.80

Step by Step Solution

1. Step 1: Write the proportion equation
   300,728.65 : 450,951.72 = 174,404.80 : x
2. Step 2: Convert to fraction form
   300,728.65/450,951.72 = 174,404.80/x
3. Step 3: Cross multiply
   300,728.65x = 450,951.72 × 174,404.80
4. Step 4: Simplify right side
   300,728.65x = 78,648,144,536.26
5. Step 5: Solve for x
   x = 78,648,144,536.26/300,728.65
6. Step 6: Final answer
   x = 261,525.28