Finding the Fourth Proportional to 669,016.96, 923,209.72 and 397,096.72

Step by Step Solution

1. Step 1: Write the proportion equation
   669,016.96 : 923,209.72 = 397,096.72 : x
2. Step 2: Convert to fraction form
   669,016.96/923,209.72 = 397,096.72/x
3. Step 3: Cross multiply
   669,016.96x = 923,209.72 × 397,096.72
4. Step 4: Simplify right side
   669,016.96x = 366,603,551,684.12
5. Step 5: Solve for x
   x = 366,603,551,684.12/669,016.96
6. Step 6: Final answer
   x = 547,973.48