Finding the Fourth Proportional to 80,805.30, 111,526.89 and 48,991.62

Step by Step Solution

1. Step 1: Write the proportion equation
   80,805.30 : 111,526.89 = 48,991.62 : x
2. Step 2: Convert to fraction form
   80,805.30/111,526.89 = 48,991.62/x
3. Step 3: Cross multiply
   80,805.30x = 111,526.89 × 48,991.62
4. Step 4: Simplify right side
   80,805.30x = 5,463,883,014.66
5. Step 5: Solve for x
   x = 5,463,883,014.66/80,805.30
6. Step 6: Final answer
   x = 67,617.88