Finding the Fourth Proportional to 131,216.35, 181,165.71 and 100,948.27

Step by Step Solution

1. Step 1: Write the proportion equation
   131,216.35 : 181,165.71 = 100,948.27 : x
2. Step 2: Convert to fraction form
   131,216.35/181,165.71 = 100,948.27/x
3. Step 3: Cross multiply
   131,216.35x = 181,165.71 × 100,948.27
4. Step 4: Simplify right side
   131,216.35x = 18,288,365,007.82
5. Step 5: Solve for x
   x = 18,288,365,007.82/131,216.35
6. Step 6: Final answer
   x = 139,375.66