Finding the Fourth Proportional to 275,085.60, 379,619.15 and 160,443.39

Step by Step Solution

1. Step 1: Write the proportion equation
   275,085.60 : 379,619.15 = 160,443.39 : x
2. Step 2: Convert to fraction form
   275,085.60/379,619.15 = 160,443.39/x
3. Step 3: Cross multiply
   275,085.60x = 379,619.15 × 160,443.39
4. Step 4: Simplify right side
   275,085.60x = 60,907,384,283.97
5. Step 5: Solve for x
   x = 60,907,384,283.97/275,085.60
6. Step 6: Final answer
   x = 221,412.48