Finding the Fourth Proportional to 131,628.94, 197,279.59 and 64,105.77

Step by Step Solution

1. Step 1: Write the proportion equation
   131,628.94 : 197,279.59 = 64,105.77 : x
2. Step 2: Convert to fraction form
   131,628.94/197,279.59 = 64,105.77/x
3. Step 3: Cross multiply
   131,628.94x = 197,279.59 × 64,105.77
4. Step 4: Simplify right side
   131,628.94x = 12,646,760,022.23
5. Step 5: Solve for x
   x = 12,646,760,022.23/131,628.94
6. Step 6: Final answer
   x = 96,078.87