Finding the Fourth Proportional to 443,716.80, 665,838.72 and 163,430.72

Step by Step Solution

1. Step 1: Write the proportion equation
   443,716.80 : 665,838.72 = 163,430.72 : x
2. Step 2: Convert to fraction form
   443,716.80/665,838.72 = 163,430.72/x
3. Step 3: Cross multiply
   443,716.80x = 665,838.72 × 163,430.72
4. Step 4: Simplify right side
   443,716.80x = 108,818,501,413.48
5. Step 5: Solve for x
   x = 108,818,501,413.48/443,716.80
6. Step 6: Final answer
   x = 245,243.14