Finding the Fourth Proportional to 71,835.98, 99,136.72 and 40,004.88

Step by Step Solution

1. Step 1: Write the proportion equation
   71,835.98 : 99,136.72 = 40,004.88 : x
2. Step 2: Convert to fraction form
   71,835.98/99,136.72 = 40,004.88/x
3. Step 3: Cross multiply
   71,835.98x = 99,136.72 × 40,004.88
4. Step 4: Simplify right side
   71,835.98x = 3,965,952,587.19
5. Step 5: Solve for x
   x = 3,965,952,587.19/71,835.98
6. Step 6: Final answer
   x = 55,208.44