Finding the Fourth Proportional to 71,715.82, 98,970.27 and 39,451.81

Step by Step Solution

1. Step 1: Write the proportion equation
   71,715.82 : 98,970.27 = 39,451.81 : x
2. Step 2: Convert to fraction form
   71,715.82/98,970.27 = 39,451.81/x
3. Step 3: Cross multiply
   71,715.82x = 98,970.27 × 39,451.81
4. Step 4: Simplify right side
   71,715.82x = 3,904,556,287.69
5. Step 5: Solve for x
   x = 3,904,556,287.69/71,715.82
6. Step 6: Final answer
   x = 54,444.84