Finding the Fourth Proportional to 80,074.86, 120,145.67 and 35,128.51

Step by Step Solution

1. Step 1: Write the proportion equation
   80,074.86 : 120,145.67 = 35,128.51 : x
2. Step 2: Convert to fraction form
   80,074.86/120,145.67 = 35,128.51/x
3. Step 3: Cross multiply
   80,074.86x = 120,145.67 × 35,128.51
4. Step 4: Simplify right side
   80,074.86x = 4,220,538,025.78
5. Step 5: Solve for x
   x = 4,220,538,025.78/80,074.86
6. Step 6: Final answer
   x = 52,707.41