Finding the Fourth Proportional to 161,309.34, 222,602.31 and 89,688.06

Step by Step Solution

1. Step 1: Write the proportion equation
   161,309.34 : 222,602.31 = 89,688.06 : x
2. Step 2: Convert to fraction form
   161,309.34/222,602.31 = 89,688.06/x
3. Step 3: Cross multiply
   161,309.34x = 222,602.31 × 89,688.06
4. Step 4: Simplify right side
   161,309.34x = 19,964,769,335.42
5. Step 5: Solve for x
   x = 19,964,769,335.42/161,309.34
6. Step 6: Final answer
   x = 123,766.98