Finding the Fourth Proportional to 80,571.78, 111,099.42 and 55,082.30

Step by Step Solution

1. Step 1: Write the proportion equation
   80,571.78 : 111,099.42 = 55,082.30 : x
2. Step 2: Convert to fraction form
   80,571.78/111,099.42 = 55,082.30/x
3. Step 3: Cross multiply
   80,571.78x = 111,099.42 × 55,082.30
4. Step 4: Simplify right side
   80,571.78x = 6,119,611,026.77
5. Step 5: Solve for x
   x = 6,119,611,026.77/80,571.78
6. Step 6: Final answer
   x = 75,952.29