Finding the Fourth Proportional to 80,669.52, 120,994.56 and 28,074.60

Step by Step Solution

1. Step 1: Write the proportion equation
   80,669.52 : 120,994.56 = 28,074.60 : x
2. Step 2: Convert to fraction form
   80,669.52/120,994.56 = 28,074.60/x
3. Step 3: Cross multiply
   80,669.52x = 120,994.56 × 28,074.60
4. Step 4: Simplify right side
   80,669.52x = 3,396,873,874.18
5. Step 5: Solve for x
   x = 3,396,873,874.18/80,669.52
6. Step 6: Final answer
   x = 42,108.52