Finding the Fourth Proportional to 131,697.42, 197,086.86 and 107,727.90

Step by Step Solution

1. Step 1: Write the proportion equation
   131,697.42 : 197,086.86 = 107,727.90 : x
2. Step 2: Convert to fraction form
   131,697.42/197,086.86 = 107,727.90/x
3. Step 3: Cross multiply
   131,697.42x = 197,086.86 × 107,727.90
4. Step 4: Simplify right side
   131,697.42x = 21,231,753,545.39
5. Step 5: Solve for x
   x = 21,231,753,545.39/131,697.42
6. Step 6: Final answer
   x = 161,216.17