Finding the Fourth Proportional to 80,945.12, 111,705.50 and 45,133.92

Step by Step Solution

1. Step 1: Write the proportion equation
   80,945.12 : 111,705.50 = 45,133.92 : x
2. Step 2: Convert to fraction form
   80,945.12/111,705.50 = 45,133.92/x
3. Step 3: Cross multiply
   80,945.12x = 111,705.50 × 45,133.92
4. Step 4: Simplify right side
   80,945.12x = 5,041,707,100.56
5. Step 5: Solve for x
   x = 5,041,707,100.56/80,945.12
6. Step 6: Final answer
   x = 62,285.50