Finding the Fourth Proportional to 86,282.72, 129,404.64 and 33,665.12

Step by Step Solution

1. Step 1: Write the proportion equation
   86,282.72 : 129,404.64 = 33,665.12 : x
2. Step 2: Convert to fraction form
   86,282.72/129,404.64 = 33,665.12/x
3. Step 3: Cross multiply
   86,282.72x = 129,404.64 × 33,665.12
4. Step 4: Simplify right side
   86,282.72x = 4,356,422,734.16
5. Step 5: Solve for x
   x = 4,356,422,734.16/86,282.72
6. Step 6: Final answer
   x = 50,490.10