Finding the Fourth Proportional to 122,826.78, 184,087.89 and 87,231.33

Step by Step Solution

1. Step 1: Write the proportion equation
   122,826.78 : 184,087.89 = 87,231.33 : x
2. Step 2: Convert to fraction form
   122,826.78/184,087.89 = 87,231.33/x
3. Step 3: Cross multiply
   122,826.78x = 184,087.89 × 87,231.33
4. Step 4: Simplify right side
   122,826.78x = 16,058,231,481.59
5. Step 5: Solve for x
   x = 16,058,231,481.59/122,826.78
6. Step 6: Final answer
   x = 130,738.85