Finding the Fourth Proportional to 456,853.92, 685,436.55 and 137,013.54

Step by Step Solution

1. Step 1: Write the proportion equation
   456,853.92 : 685,436.55 = 137,013.54 : x
2. Step 2: Convert to fraction form
   456,853.92/685,436.55 = 137,013.54/x
3. Step 3: Cross multiply
   456,853.92x = 685,436.55 × 137,013.54
4. Step 4: Simplify right side
   456,853.92x = 93,914,088,160.89
5. Step 5: Solve for x
   x = 93,914,088,160.89/456,853.92
6. Step 6: Final answer
   x = 205,567.00