Finding the Fourth Proportional to 123,398.10, 170,055.99 and 89,348.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,398.10 : 170,055.99 = 89,348.94 : x
2. Step 2: Convert to fraction form
   123,398.10/170,055.99 = 89,348.94/x
3. Step 3: Cross multiply
   123,398.10x = 170,055.99 × 89,348.94
4. Step 4: Simplify right side
   123,398.10x = 15,194,322,447.15
5. Step 5: Solve for x
   x = 15,194,322,447.15/123,398.10
6. Step 6: Final answer
   x = 123,132.55