Finding the Fourth Proportional to 401,096.70, 553,443.27 and 228,936.06

Step by Step Solution

1. Step 1: Write the proportion equation
   401,096.70 : 553,443.27 = 228,936.06 : x
2. Step 2: Convert to fraction form
   401,096.70/553,443.27 = 228,936.06/x
3. Step 3: Cross multiply
   401,096.70x = 553,443.27 × 228,936.06
4. Step 4: Simplify right side
   401,096.70x = 126,703,121,667.32
5. Step 5: Solve for x
   x = 126,703,121,667.32/401,096.70
6. Step 6: Final answer
   x = 315,891.71