Finding the Fourth Proportional to 395,870.69, 546,273.72 and 223,796.62

Step by Step Solution

1. Step 1: Write the proportion equation
   395,870.69 : 546,273.72 = 223,796.62 : x
2. Step 2: Convert to fraction form
   395,870.69/546,273.72 = 223,796.62/x
3. Step 3: Cross multiply
   395,870.69x = 546,273.72 × 223,796.62
4. Step 4: Simplify right side
   395,870.69x = 122,254,212,813.67
5. Step 5: Solve for x
   x = 122,254,212,813.67/395,870.69
6. Step 6: Final answer
   x = 308,823.60