Finding the Fourth Proportional to 107,716, 161,606.64 and 55,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   107,716 : 161,606.64 = 55,162.72 : x
2. Step 2: Convert to fraction form
   107,716/161,606.64 = 55,162.72/x
3. Step 3: Cross multiply
   107,716x = 161,606.64 × 55,162.72
4. Step 4: Simplify right side
   107,716x = 8,914,661,832.46
5. Step 5: Solve for x
   x = 8,914,661,832.46/107,716
6. Step 6: Final answer
   x = 82,760.80