Finding the Fourth Proportional to 266,663.37, 400,016.34 and 89,171.31

Step by Step Solution

1. Step 1: Write the proportion equation
   266,663.37 : 400,016.34 = 89,171.31 : x
2. Step 2: Convert to fraction form
   266,663.37/400,016.34 = 89,171.31/x
3. Step 3: Cross multiply
   266,663.37x = 400,016.34 × 89,171.31
4. Step 4: Simplify right side
   266,663.37x = 35,669,981,059.21
5. Step 5: Solve for x
   x = 35,669,981,059.21/266,663.37
6. Step 6: Final answer
   x = 133,764.08