Finding the Fourth Proportional to 448,212.72, 618,533.57 and 247,008.72

Step by Step Solution

1. Step 1: Write the proportion equation
   448,212.72 : 618,533.57 = 247,008.72 : x
2. Step 2: Convert to fraction form
   448,212.72/618,533.57 = 247,008.72/x
3. Step 3: Cross multiply
   448,212.72x = 618,533.57 × 247,008.72
4. Step 4: Simplify right side
   448,212.72x = 152,783,185,402.73
5. Step 5: Solve for x
   x = 152,783,185,402.73/448,212.72
6. Step 6: Final answer
   x = 340,872.04