Finding the Fourth Proportional to 85,775.14, 128,605.25 and 33,123.12

Step by Step Solution

1. Step 1: Write the proportion equation
   85,775.14 : 128,605.25 = 33,123.12 : x
2. Step 2: Convert to fraction form
   85,775.14/128,605.25 = 33,123.12/x
3. Step 3: Cross multiply
   85,775.14x = 128,605.25 × 33,123.12
4. Step 4: Simplify right side
   85,775.14x = 4,259,807,128.38
5. Step 5: Solve for x
   x = 4,259,807,128.38/85,775.14
6. Step 6: Final answer
   x = 49,662.49