Finding the Fourth Proportional to 78,589, 108,463.80 and 50,354.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,589 : 108,463.80 = 50,354.83 : x
2. Step 2: Convert to fraction form
   78,589/108,463.80 = 50,354.83/x
3. Step 3: Cross multiply
   78,589x = 108,463.80 × 50,354.83
4. Step 4: Simplify right side
   78,589x = 5,461,676,210.15
5. Step 5: Solve for x
   x = 5,461,676,210.15/78,589
6. Step 6: Final answer
   x = 69,496.70