Finding the Fourth Proportional to 81,097.22, 121,632.62 and 28,494.42

Step by Step Solution

1. Step 1: Write the proportion equation
   81,097.22 : 121,632.62 = 28,494.42 : x
2. Step 2: Convert to fraction form
   81,097.22/121,632.62 = 28,494.42/x
3. Step 3: Cross multiply
   81,097.22x = 121,632.62 × 28,494.42
4. Step 4: Simplify right side
   81,097.22x = 3,465,850,817.51
5. Step 5: Solve for x
   x = 3,465,850,817.51/81,097.22
6. Step 6: Final answer
   x = 42,736.99