Finding the Fourth Proportional to 161,498.15, 222,865.28 and 89,878.15

Step by Step Solution

1. Step 1: Write the proportion equation
   161,498.15 : 222,865.28 = 89,878.15 : x
2. Step 2: Convert to fraction form
   161,498.15/222,865.28 = 89,878.15/x
3. Step 3: Cross multiply
   161,498.15x = 222,865.28 × 89,878.15
4. Step 4: Simplify right side
   161,498.15x = 20,030,719,231.87
5. Step 5: Solve for x
   x = 20,030,719,231.87/161,498.15
6. Step 6: Final answer
   x = 124,030.64