Finding the Fourth Proportional to 78,198.42, 117,484.56 and 50,173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,198.42 : 117,484.56 = 50,173.50 : x
2. Step 2: Convert to fraction form
   78,198.42/117,484.56 = 50,173.50/x
3. Step 3: Cross multiply
   78,198.42x = 117,484.56 × 50,173.50
4. Step 4: Simplify right side
   78,198.42x = 5,894,611,571.16
5. Step 5: Solve for x
   x = 5,894,611,571.16/78,198.42
6. Step 6: Final answer
   x = 75,380.19