Finding the Fourth Proportional to 123,418.10, 170,083.58 and 89,368.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,418.10 : 170,083.58 = 89,368.94 : x
2. Step 2: Convert to fraction form
   123,418.10/170,083.58 = 89,368.94/x
3. Step 3: Cross multiply
   123,418.10x = 170,083.58 × 89,368.94
4. Step 4: Simplify right side
   123,418.10x = 15,200,189,256.01
5. Step 5: Solve for x
   x = 15,200,189,256.01/123,418.10
6. Step 6: Final answer
   x = 123,160.13