Finding the Fourth Proportional to 65,992.30, 91,082.61 and 39,149.71

Step by Step Solution

1. Step 1: Write the proportion equation
   65,992.30 : 91,082.61 = 39,149.71 : x
2. Step 2: Convert to fraction form
   65,992.30/91,082.61 = 39,149.71/x
3. Step 3: Cross multiply
   65,992.30x = 91,082.61 × 39,149.71
4. Step 4: Simplify right side
   65,992.30x = 3,565,857,116.38
5. Step 5: Solve for x
   x = 3,565,857,116.38/65,992.30
6. Step 6: Final answer
   x = 54,034.45