Finding the Fourth Proportional to 71,211.69, 98,272.71 and 39,382.74

Step by Step Solution

1. Step 1: Write the proportion equation
   71,211.69 : 98,272.71 = 39,382.74 : x
2. Step 2: Convert to fraction form
   71,211.69/98,272.71 = 39,382.74/x
3. Step 3: Cross multiply
   71,211.69x = 98,272.71 × 39,382.74
4. Step 4: Simplify right side
   71,211.69x = 3,870,248,587.03
5. Step 5: Solve for x
   x = 3,870,248,587.03/71,211.69
6. Step 6: Final answer
   x = 54,348.50