Finding the Fourth Proportional to 80,528, 120,826.12 and 43,078.26

Step by Step Solution

1. Step 1: Write the proportion equation
   80,528 : 120,826.12 = 43,078.26 : x
2. Step 2: Convert to fraction form
   80,528/120,826.12 = 43,078.26/x
3. Step 3: Cross multiply
   80,528x = 120,826.12 × 43,078.26
4. Step 4: Simplify right side
   80,528x = 5,204,979,012.15
5. Step 5: Solve for x
   x = 5,204,979,012.15/80,528
6. Step 6: Final answer
   x = 64,635.64