Finding the Fourth Proportional to 173,676.72, 239,610.20 and 105,665.84

Step by Step Solution

1. Step 1: Write the proportion equation
   173,676.72 : 239,610.20 = 105,665.84 : x
2. Step 2: Convert to fraction form
   173,676.72/239,610.20 = 105,665.84/x
3. Step 3: Cross multiply
   173,676.72x = 239,610.20 × 105,665.84
4. Step 4: Simplify right side
   173,676.72x = 25,318,613,055.57
5. Step 5: Solve for x
   x = 25,318,613,055.57/173,676.72
6. Step 6: Final answer
   x = 145,780.12