Finding the Fourth Proportional to 78,796.50, 108,739.17 and 50,502.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,796.50 : 108,739.17 = 50,502.20 : x
2. Step 2: Convert to fraction form
   78,796.50/108,739.17 = 50,502.20/x
3. Step 3: Cross multiply
   78,796.50x = 108,739.17 × 50,502.20
4. Step 4: Simplify right side
   78,796.50x = 5,491,566,767.48
5. Step 5: Solve for x
   x = 5,491,566,767.48/78,796.50
6. Step 6: Final answer
   x = 69,693.03