Finding the Fourth Proportional to 161,099.78, 222,317.96 and 89,477.96

Step by Step Solution

1. Step 1: Write the proportion equation
   161,099.78 : 222,317.96 = 89,477.96 : x
2. Step 2: Convert to fraction form
   161,099.78/222,317.96 = 89,477.96/x
3. Step 3: Cross multiply
   161,099.78x = 222,317.96 × 89,477.96
4. Step 4: Simplify right side
   161,099.78x = 19,892,555,973.18
5. Step 5: Solve for x
   x = 19,892,555,973.18/161,099.78
6. Step 6: Final answer
   x = 123,479.73