Finding the Fourth Proportional to 161,301.96, 222,602.31 and 89,685

Step by Step Solution

1. Step 1: Write the proportion equation
   161,301.96 : 222,602.31 = 89,685 : x
2. Step 2: Convert to fraction form
   161,301.96/222,602.31 = 89,685/x
3. Step 3: Cross multiply
   161,301.96x = 222,602.31 × 89,685
4. Step 4: Simplify right side
   161,301.96x = 19,964,088,172.35
5. Step 5: Solve for x
   x = 19,964,088,172.35/161,301.96
6. Step 6: Final answer
   x = 123,768.42