Finding the Fourth Proportional to 85,974.22, 128,939.46 and 33,355

Step by Step Solution

1. Step 1: Write the proportion equation
   85,974.22 : 128,939.46 = 33,355 : x
2. Step 2: Convert to fraction form
   85,974.22/128,939.46 = 33,355/x
3. Step 3: Cross multiply
   85,974.22x = 128,939.46 × 33,355
4. Step 4: Simplify right side
   85,974.22x = 4,300,775,688.30
5. Step 5: Solve for x
   x = 4,300,775,688.30/85,974.22
6. Step 6: Final answer
   x = 50,024.02