Finding the Fourth Proportional to 256,328.82, 384,308.55 and 156,465.54

Step by Step Solution

1. Step 1: Write the proportion equation
   256,328.82 : 384,308.55 = 156,465.54 : x
2. Step 2: Convert to fraction form
   256,328.82/384,308.55 = 156,465.54/x
3. Step 3: Cross multiply
   256,328.82x = 384,308.55 × 156,465.54
4. Step 4: Simplify right side
   256,328.82x = 60,131,044,802.37
5. Step 5: Solve for x
   x = 60,131,044,802.37/256,328.82
6. Step 6: Final answer
   x = 234,585.58