Finding the Fourth Proportional to 79,756.56, 119,661.98 and 50,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,756.56 : 119,661.98 = 50,139.72 : x
2. Step 2: Convert to fraction form
   79,756.56/119,661.98 = 50,139.72/x
3. Step 3: Cross multiply
   79,756.56x = 119,661.98 × 50,139.72
4. Step 4: Simplify right side
   79,756.56x = 5,999,818,171.85
5. Step 5: Solve for x
   x = 5,999,818,171.85/79,756.56
6. Step 6: Final answer
   x = 75,226.64