Finding the Fourth Proportional to 78,399.38, 117,581.33 and 36,256.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,399.38 : 117,581.33 = 36,256.38 : x
2. Step 2: Convert to fraction form
   78,399.38/117,581.33 = 36,256.38/x
3. Step 3: Cross multiply
   78,399.38x = 117,581.33 × 36,256.38
4. Step 4: Simplify right side
   78,399.38x = 4,263,073,200.10
5. Step 5: Solve for x
   x = 4,263,073,200.10/78,399.38
6. Step 6: Final answer
   x = 54,376.37