Finding the Fourth Proportional to 300,399.75, 414,552.06 and 187,222.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,399.75 : 414,552.06 = 187,222.50 : x
2. Step 2: Convert to fraction form
   300,399.75/414,552.06 = 187,222.50/x
3. Step 3: Cross multiply
   300,399.75x = 414,552.06 × 187,222.50
4. Step 4: Simplify right side
   300,399.75x = 77,613,473,053.35
5. Step 5: Solve for x
   x = 77,613,473,053.35/300,399.75
6. Step 6: Final answer
   x = 258,367.30