Finding the Fourth Proportional to 91,884.24, 138,451.56 and 75,609.28

Step by Step Solution

1. Step 1: Write the proportion equation
   91,884.24 : 138,451.56 = 75,609.28 : x
2. Step 2: Convert to fraction form
   91,884.24/138,451.56 = 75,609.28/x
3. Step 3: Cross multiply
   91,884.24x = 138,451.56 × 75,609.28
4. Step 4: Simplify right side
   91,884.24x = 10,468,222,766.48
5. Step 5: Solve for x
   x = 10,468,222,766.48/91,884.24
6. Step 6: Final answer
   x = 113,928.38