Finding the Fourth Proportional to 78,196.10, 117,481.09 and 50,171.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,196.10 : 117,481.09 = 50,171.20 : x
2. Step 2: Convert to fraction form
   78,196.10/117,481.09 = 50,171.20/x
3. Step 3: Cross multiply
   78,196.10x = 117,481.09 × 50,171.20
4. Step 4: Simplify right side
   78,196.10x = 5,894,167,262.61
5. Step 5: Solve for x
   x = 5,894,167,262.61/78,196.10
6. Step 6: Final answer
   x = 75,376.74