Finding the Fourth Proportional to 78,939, 108,984.42 and 50,694.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,939 : 108,984.42 = 50,694.48 : x
2. Step 2: Convert to fraction form
   78,939/108,984.42 = 50,694.48/x
3. Step 3: Cross multiply
   78,939x = 108,984.42 × 50,694.48
4. Step 4: Simplify right side
   78,939x = 5,524,908,500.00
5. Step 5: Solve for x
   x = 5,524,908,500.00/78,939
6. Step 6: Final answer
   x = 69,989.59