Finding the Fourth Proportional to 80,903.10, 121,311.45 and 34,103.10

Step by Step Solution

1. Step 1: Write the proportion equation
   80,903.10 : 121,311.45 = 34,103.10 : x
2. Step 2: Convert to fraction form
   80,903.10/121,311.45 = 34,103.10/x
3. Step 3: Cross multiply
   80,903.10x = 121,311.45 × 34,103.10
4. Step 4: Simplify right side
   80,903.10x = 4,137,096,510.50
5. Step 5: Solve for x
   x = 4,137,096,510.50/80,903.10
6. Step 6: Final answer
   x = 51,136.44