Finding the Fourth Proportional to 78,984.04, 108,987.42 and 50,728

Step by Step Solution

1. Step 1: Write the proportion equation
   78,984.04 : 108,987.42 = 50,728 : x
2. Step 2: Convert to fraction form
   78,984.04/108,987.42 = 50,728/x
3. Step 3: Cross multiply
   78,984.04x = 108,987.42 × 50,728
4. Step 4: Simplify right side
   78,984.04x = 5,528,713,841.76
5. Step 5: Solve for x
   x = 5,528,713,841.76/78,984.04
6. Step 6: Final answer
   x = 69,997.86