Finding the Fourth Proportional to 395,426.72, 545,686.16 and 214,134.50

Step by Step Solution

1. Step 1: Write the proportion equation
   395,426.72 : 545,686.16 = 214,134.50 : x
2. Step 2: Convert to fraction form
   395,426.72/545,686.16 = 214,134.50/x
3. Step 3: Cross multiply
   395,426.72x = 545,686.16 × 214,134.50
4. Step 4: Simplify right side
   395,426.72x = 116,850,229,229.42
5. Step 5: Solve for x
   x = 116,850,229,229.42/395,426.72
6. Step 6: Final answer
   x = 295,504.13