Finding the Fourth Proportional to 426,667.20, 588,818.63 and 245,379.27

Step by Step Solution

1. Step 1: Write the proportion equation
   426,667.20 : 588,818.63 = 245,379.27 : x
2. Step 2: Convert to fraction form
   426,667.20/588,818.63 = 245,379.27/x
3. Step 3: Cross multiply
   426,667.20x = 588,818.63 × 245,379.27
4. Step 4: Simplify right side
   426,667.20x = 144,483,888,413.32
5. Step 5: Solve for x
   x = 144,483,888,413.32/426,667.20
6. Step 6: Final answer
   x = 338,633.69