Finding the Fourth Proportional to 80,997.66, 111,778.98 and 50,780.14

Step by Step Solution

1. Step 1: Write the proportion equation
   80,997.66 : 111,778.98 = 50,780.14 : x
2. Step 2: Convert to fraction form
   80,997.66/111,778.98 = 50,780.14/x
3. Step 3: Cross multiply
   80,997.66x = 111,778.98 × 50,780.14
4. Step 4: Simplify right side
   80,997.66x = 5,676,152,253.46
5. Step 5: Solve for x
   x = 5,676,152,253.46/80,997.66
6. Step 6: Final answer
   x = 70,077.98