Finding the Fourth Proportional to 518,579.69, 778,233.14 and 214,978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   518,579.69 : 778,233.14 = 214,978.52 : x
2. Step 2: Convert to fraction form
   518,579.69/778,233.14 = 214,978.52/x
3. Step 3: Cross multiply
   518,579.69x = 778,233.14 × 214,978.52
4. Step 4: Simplify right side
   518,579.69x = 167,303,410,495.63
5. Step 5: Solve for x
   x = 167,303,410,495.63/518,579.69
6. Step 6: Final answer
   x = 322,618.52