Finding the Fourth Proportional to 107,871.48, 161,846.10 and 55,305.72

Step by Step Solution

1. Step 1: Write the proportion equation
   107,871.48 : 161,846.10 = 55,305.72 : x
2. Step 2: Convert to fraction form
   107,871.48/161,846.10 = 55,305.72/x
3. Step 3: Cross multiply
   107,871.48x = 161,846.10 × 55,305.72
4. Step 4: Simplify right side
   107,871.48x = 8,951,015,089.69
5. Step 5: Solve for x
   x = 8,951,015,089.69/107,871.48
6. Step 6: Final answer
   x = 82,978.51