Finding the Fourth Proportional to 115,983.94, 160,134.94 and 89,078.38

Step by Step Solution

1. Step 1: Write the proportion equation
   115,983.94 : 160,134.94 = 89,078.38 : x
2. Step 2: Convert to fraction form
   115,983.94/160,134.94 = 89,078.38/x
3. Step 3: Cross multiply
   115,983.94x = 160,134.94 × 89,078.38
4. Step 4: Simplify right side
   115,983.94x = 14,264,561,036.60
5. Step 5: Solve for x
   x = 14,264,561,036.60/115,983.94
6. Step 6: Final answer
   x = 122,987.38