Finding the Fourth Proportional to 85,849.16, 128,660.72 and 41,394.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,849.16 : 128,660.72 = 41,394.72 : x
2. Step 2: Convert to fraction form
   85,849.16/128,660.72 = 41,394.72/x
3. Step 3: Cross multiply
   85,849.16x = 128,660.72 × 41,394.72
4. Step 4: Simplify right side
   85,849.16x = 5,325,874,479.40
5. Step 5: Solve for x
   x = 5,325,874,479.40/85,849.16
6. Step 6: Final answer
   x = 62,037.58