Finding the Fourth Proportional to 71,818.46, 99,109.46 and 39,994.88

Step by Step Solution

1. Step 1: Write the proportion equation
   71,818.46 : 99,109.46 = 39,994.88 : x
2. Step 2: Convert to fraction form
   71,818.46/99,109.46 = 39,994.88/x
3. Step 3: Cross multiply
   71,818.46x = 99,109.46 × 39,994.88
4. Step 4: Simplify right side
   71,818.46x = 3,963,870,959.56
5. Step 5: Solve for x
   x = 3,963,870,959.56/71,818.46
6. Step 6: Final answer
   x = 55,192.93