Finding the Fourth Proportional to 551,144.86, 826,901.25 and 214,196.20

Step by Step Solution

1. Step 1: Write the proportion equation
   551,144.86 : 826,901.25 = 214,196.20 : x
2. Step 2: Convert to fraction form
   551,144.86/826,901.25 = 214,196.20/x
3. Step 3: Cross multiply
   551,144.86x = 826,901.25 × 214,196.20
4. Step 4: Simplify right side
   551,144.86x = 177,119,105,525.25
5. Step 5: Solve for x
   x = 177,119,105,525.25/551,144.86
6. Step 6: Final answer
   x = 321,365.79