Finding the Fourth Proportional to 131,717.31, 181,796.72 and 89,289.51

Step by Step Solution

1. Step 1: Write the proportion equation
   131,717.31 : 181,796.72 = 89,289.51 : x
2. Step 2: Convert to fraction form
   131,717.31/181,796.72 = 89,289.51/x
3. Step 3: Cross multiply
   131,717.31x = 181,796.72 × 89,289.51
4. Step 4: Simplify right side
   131,717.31x = 16,232,539,601.96
5. Step 5: Solve for x
   x = 16,232,539,601.96/131,717.31
6. Step 6: Final answer
   x = 123,237.71