Finding the Fourth Proportional to 407,464.50, 611,796.54 and 227,901.72

Step by Step Solution

1. Step 1: Write the proportion equation
   407,464.50 : 611,796.54 = 227,901.72 : x
2. Step 2: Convert to fraction form
   407,464.50/611,796.54 = 227,901.72/x
3. Step 3: Cross multiply
   407,464.50x = 611,796.54 × 227,901.72
4. Step 4: Simplify right side
   407,464.50x = 139,429,483,756.05
5. Step 5: Solve for x
   x = 139,429,483,756.05/407,464.50
6. Step 6: Final answer
   x = 342,188.05