Finding the Fourth Proportional to 80,790.12, 111,490.56 and 44,978.40

Step by Step Solution

1. Step 1: Write the proportion equation
   80,790.12 : 111,490.56 = 44,978.40 : x
2. Step 2: Convert to fraction form
   80,790.12/111,490.56 = 44,978.40/x
3. Step 3: Cross multiply
   80,790.12x = 111,490.56 × 44,978.40
4. Step 4: Simplify right side
   80,790.12x = 5,014,667,003.90
5. Step 5: Solve for x
   x = 5,014,667,003.90/80,790.12
6. Step 6: Final answer
   x = 62,070.30