Finding the Fourth Proportional to 278,592, 384,456.96 and 159,360

Step by Step Solution

1. Step 1: Write the proportion equation
   278,592 : 384,456.96 = 159,360 : x
2. Step 2: Convert to fraction form
   278,592/384,456.96 = 159,360/x
3. Step 3: Cross multiply
   278,592x = 384,456.96 × 159,360
4. Step 4: Simplify right side
   278,592x = 61,267,061,145.60
5. Step 5: Solve for x
   x = 61,267,061,145.60/278,592
6. Step 6: Final answer
   x = 219,916.80