Finding the Fourth Proportional to 80,913.30, 111,660.88 and 45,105.60

Step by Step Solution

1. Step 1: Write the proportion equation
   80,913.30 : 111,660.88 = 45,105.60 : x
2. Step 2: Convert to fraction form
   80,913.30/111,660.88 = 45,105.60/x
3. Step 3: Cross multiply
   80,913.30x = 111,660.88 × 45,105.60
4. Step 4: Simplify right side
   80,913.30x = 5,036,530,988.93
5. Step 5: Solve for x
   x = 5,036,530,988.93/80,913.30
6. Step 6: Final answer
   x = 62,246.02