Finding the Fourth Proportional to 89,364.38, 134,081.28 and 39,409.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,364.38 : 134,081.28 = 39,409.25 : x
2. Step 2: Convert to fraction form
   89,364.38/134,081.28 = 39,409.25/x
3. Step 3: Cross multiply
   89,364.38x = 134,081.28 × 39,409.25
4. Step 4: Simplify right side
   89,364.38x = 5,284,042,013.43
5. Step 5: Solve for x
   x = 5,284,042,013.43/89,364.38
6. Step 6: Final answer
   x = 59,129.18