Finding the Fourth Proportional to 162,989.82, 224,914.56 and 90,396.54

Step by Step Solution

1. Step 1: Write the proportion equation
   162,989.82 : 224,914.56 = 90,396.54 : x
2. Step 2: Convert to fraction form
   162,989.82/224,914.56 = 90,396.54/x
3. Step 3: Cross multiply
   162,989.82x = 224,914.56 × 90,396.54
4. Step 4: Simplify right side
   162,989.82x = 20,331,498,019.62
5. Step 5: Solve for x
   x = 20,331,498,019.62/162,989.82
6. Step 6: Final answer
   x = 124,740.91