Finding the Fourth Proportional to 71,667.38, 98,904.34 and 39,836.81

Step by Step Solution

1. Step 1: Write the proportion equation
   71,667.38 : 98,904.34 = 39,836.81 : x
2. Step 2: Convert to fraction form
   71,667.38/98,904.34 = 39,836.81/x
3. Step 3: Cross multiply
   71,667.38x = 98,904.34 × 39,836.81
4. Step 4: Simplify right side
   71,667.38x = 3,940,033,697.81
5. Step 5: Solve for x
   x = 3,940,033,697.81/71,667.38
6. Step 6: Final answer
   x = 54,976.67