Finding the Fourth Proportional to 258,260.38, 387,168.69 and 89,758.82

Step by Step Solution

1. Step 1: Write the proportion equation
   258,260.38 : 387,168.69 = 89,758.82 : x
2. Step 2: Convert to fraction form
   258,260.38/387,168.69 = 89,758.82/x
3. Step 3: Cross multiply
   258,260.38x = 387,168.69 × 89,758.82
4. Step 4: Simplify right side
   258,260.38x = 34,751,803,882.04
5. Step 5: Solve for x
   x = 34,751,803,882.04/258,260.38
6. Step 6: Final answer
   x = 134,561.11