Finding the Fourth Proportional to 85,677.48, 128,427.12 and 33,123.06

Step by Step Solution

1. Step 1: Write the proportion equation
   85,677.48 : 128,427.12 = 33,123.06 : x
2. Step 2: Convert to fraction form
   85,677.48/128,427.12 = 33,123.06/x
3. Step 3: Cross multiply
   85,677.48x = 128,427.12 × 33,123.06
4. Step 4: Simplify right side
   85,677.48x = 4,253,899,201.39
5. Step 5: Solve for x
   x = 4,253,899,201.39/85,677.48
6. Step 6: Final answer
   x = 49,650.14