Finding the Fourth Proportional to 80,498.12, 120,743.30 and 30,574.32

Step by Step Solution

1. Step 1: Write the proportion equation
   80,498.12 : 120,743.30 = 30,574.32 : x
2. Step 2: Convert to fraction form
   80,498.12/120,743.30 = 30,574.32/x
3. Step 3: Cross multiply
   80,498.12x = 120,743.30 × 30,574.32
4. Step 4: Simplify right side
   80,498.12x = 3,691,643,979.10
5. Step 5: Solve for x
   x = 3,691,643,979.10/80,498.12
6. Step 6: Final answer
   x = 45,860.00