Finding the Fourth Proportional to 80,928.45, 111,675.56 and 45,120.42

Step by Step Solution

1. Step 1: Write the proportion equation
   80,928.45 : 111,675.56 = 45,120.42 : x
2. Step 2: Convert to fraction form
   80,928.45/111,675.56 = 45,120.42/x
3. Step 3: Cross multiply
   80,928.45x = 111,675.56 × 45,120.42
4. Step 4: Simplify right side
   80,928.45x = 5,038,847,945.33
5. Step 5: Solve for x
   x = 5,038,847,945.33/80,928.45
6. Step 6: Final answer
   x = 62,263.00