Finding the Fourth Proportional to 261,320.72, 391,979.64 and 95,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   261,320.72 : 391,979.64 = 95,108.72 : x
2. Step 2: Convert to fraction form
   261,320.72/391,979.64 = 95,108.72/x
3. Step 3: Cross multiply
   261,320.72x = 391,979.64 × 95,108.72
4. Step 4: Simplify right side
   261,320.72x = 37,280,681,826.46
5. Step 5: Solve for x
   x = 37,280,681,826.46/261,320.72
6. Step 6: Final answer
   x = 142,662.56