Finding the Fourth Proportional to 161,059.56, 222,272.47 and 89,439.58

Step by Step Solution

1. Step 1: Write the proportion equation
   161,059.56 : 222,272.47 = 89,439.58 : x
2. Step 2: Convert to fraction form
   161,059.56/222,272.47 = 89,439.58/x
3. Step 3: Cross multiply
   161,059.56x = 222,272.47 × 89,439.58
4. Step 4: Simplify right side
   161,059.56x = 19,879,955,501.72
5. Step 5: Solve for x
   x = 19,879,955,501.72/161,059.56
6. Step 6: Final answer
   x = 123,432.33