Finding the Fourth Proportional to 161,532.69, 222,910.16 and 89,910.87

Step by Step Solution

1. Step 1: Write the proportion equation
   161,532.69 : 222,910.16 = 89,910.87 : x
2. Step 2: Convert to fraction form
   161,532.69/222,910.16 = 89,910.87/x
3. Step 3: Cross multiply
   161,532.69x = 222,910.16 × 89,910.87
4. Step 4: Simplify right side
   161,532.69x = 20,042,045,967.88
5. Step 5: Solve for x
   x = 20,042,045,967.88/161,532.69
6. Step 6: Final answer
   x = 124,074.24