Finding the Fourth Proportional to 80,920.96, 111,674.80 and 45,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   80,920.96 : 111,674.80 = 45,111.28 : x
2. Step 2: Convert to fraction form
   80,920.96/111,674.80 = 45,111.28/x
3. Step 3: Cross multiply
   80,920.96x = 111,674.80 × 45,111.28
4. Step 4: Simplify right side
   80,920.96x = 5,037,793,171.74
5. Step 5: Solve for x
   x = 5,037,793,171.74/80,920.96
6. Step 6: Final answer
   x = 62,255.73