Finding the Fourth Proportional to 78,796.50, 108,719.78 and 50,540.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,796.50 : 108,719.78 = 50,540.46 : x
2. Step 2: Convert to fraction form
   78,796.50/108,719.78 = 50,540.46/x
3. Step 3: Cross multiply
   78,796.50x = 108,719.78 × 50,540.46
4. Step 4: Simplify right side
   78,796.50x = 5,494,747,692.30
5. Step 5: Solve for x
   x = 5,494,747,692.30/78,796.50
6. Step 6: Final answer
   x = 69,733.40