Finding the Fourth Proportional to 250,282.35, 344,521.89 and 218,395.89

Step by Step Solution

1. Step 1: Write the proportion equation
   250,282.35 : 344,521.89 = 218,395.89 : x
2. Step 2: Convert to fraction form
   250,282.35/344,521.89 = 218,395.89/x
3. Step 3: Cross multiply
   250,282.35x = 344,521.89 × 218,395.89
4. Step 4: Simplify right side
   250,282.35x = 75,242,164,791.03
5. Step 5: Solve for x
   x = 75,242,164,791.03/250,282.35
6. Step 6: Final answer
   x = 300,629.13