Finding the Fourth Proportional to 468,443.72, 646,456.79 and 274,854.72

Step by Step Solution

1. Step 1: Write the proportion equation
   468,443.72 : 646,456.79 = 274,854.72 : x
2. Step 2: Convert to fraction form
   468,443.72/646,456.79 = 274,854.72/x
3. Step 3: Cross multiply
   468,443.72x = 646,456.79 × 274,854.72
4. Step 4: Simplify right side
   468,443.72x = 177,681,700,007.55
5. Step 5: Solve for x
   x = 177,681,700,007.55/468,443.72
6. Step 6: Final answer
   x = 379,302.13