Finding the Fourth Proportional to 161,181.63, 222,436.53 and 89,568.72

Step by Step Solution

1. Step 1: Write the proportion equation
   161,181.63 : 222,436.53 = 89,568.72 : x
2. Step 2: Convert to fraction form
   161,181.63/222,436.53 = 89,568.72/x
3. Step 3: Cross multiply
   161,181.63x = 222,436.53 × 89,568.72
4. Step 4: Simplify right side
   161,181.63x = 19,923,355,273.34
5. Step 5: Solve for x
   x = 19,923,355,273.34/161,181.63
6. Step 6: Final answer
   x = 123,608.10