Finding the Fourth Proportional to 107,659, 161,521.38 and 55,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   107,659 : 161,521.38 = 55,105.72 : x
2. Step 2: Convert to fraction form
   107,659/161,521.38 = 55,105.72/x
3. Step 3: Cross multiply
   107,659x = 161,521.38 × 55,105.72
4. Step 4: Simplify right side
   107,659x = 8,900,751,940.29
5. Step 5: Solve for x
   x = 8,900,751,940.29/107,659
6. Step 6: Final answer
   x = 82,675.41