Finding the Fourth Proportional to 96,081.89, 144,138.20 and 40,686.05

Step by Step Solution

1. Step 1: Write the proportion equation
   96,081.89 : 144,138.20 = 40,686.05 : x
2. Step 2: Convert to fraction form
   96,081.89/144,138.20 = 40,686.05/x
3. Step 3: Cross multiply
   96,081.89x = 144,138.20 × 40,686.05
4. Step 4: Simplify right side
   96,081.89x = 5,864,413,808.68
5. Step 5: Solve for x
   x = 5,864,413,808.68/96,081.89
6. Step 6: Final answer
   x = 61,035.58