Finding the Fourth Proportional to 395,667.72, 546,020.64 and 214,384.23

Step by Step Solution

1. Step 1: Write the proportion equation
   395,667.72 : 546,020.64 = 214,384.23 : x
2. Step 2: Convert to fraction form
   395,667.72/546,020.64 = 214,384.23/x
3. Step 3: Cross multiply
   395,667.72x = 546,020.64 × 214,384.23
4. Step 4: Simplify right side
   395,667.72x = 117,058,214,470.51
5. Step 5: Solve for x
   x = 117,058,214,470.51/395,667.72
6. Step 6: Final answer
   x = 295,849.80