Finding the Fourth Proportional to 80,788.22, 121,188.81 and 28,196.54

Step by Step Solution

1. Step 1: Write the proportion equation
   80,788.22 : 121,188.81 = 28,196.54 : x
2. Step 2: Convert to fraction form
   80,788.22/121,188.81 = 28,196.54/x
3. Step 3: Cross multiply
   80,788.22x = 121,188.81 × 28,196.54
4. Step 4: Simplify right side
   80,788.22x = 3,417,105,128.72
5. Step 5: Solve for x
   x = 3,417,105,128.72/80,788.22
6. Step 6: Final answer
   x = 42,297.07