Finding the Fourth Proportional to 353,096.84, 486,816.28 and 228,696.48

Step by Step Solution

1. Step 1: Write the proportion equation
   353,096.84 : 486,816.28 = 228,696.48 : x
2. Step 2: Convert to fraction form
   353,096.84/486,816.28 = 228,696.48/x
3. Step 3: Cross multiply
   353,096.84x = 486,816.28 × 228,696.48
4. Step 4: Simplify right side
   353,096.84x = 111,333,169,642.69
5. Step 5: Solve for x
   x = 111,333,169,642.69/353,096.84
6. Step 6: Final answer
   x = 315,304.92