Finding the Fourth Proportional to 71,968.94, 99,316.83 and 39,702.69

Step by Step Solution

1. Step 1: Write the proportion equation
   71,968.94 : 99,316.83 = 39,702.69 : x
2. Step 2: Convert to fraction form
   71,968.94/99,316.83 = 39,702.69/x
3. Step 3: Cross multiply
   71,968.94x = 99,316.83 × 39,702.69
4. Step 4: Simplify right side
   71,968.94x = 3,943,145,462.16
5. Step 5: Solve for x
   x = 3,943,145,462.16/71,968.94
6. Step 6: Final answer
   x = 54,789.55