Finding the Fourth Proportional to 293,016.20, 404,364.78 and 158,880.20

Step by Step Solution

1. Step 1: Write the proportion equation
   293,016.20 : 404,364.78 = 158,880.20 : x
2. Step 2: Convert to fraction form
   293,016.20/404,364.78 = 158,880.20/x
3. Step 3: Cross multiply
   293,016.20x = 404,364.78 × 158,880.20
4. Step 4: Simplify right side
   293,016.20x = 64,245,555,097.53
5. Step 5: Solve for x
   x = 64,245,555,097.53/293,016.20
6. Step 6: Final answer
   x = 219,255.99