Finding the Fourth Proportional to 71,825.60, 99,118.35 and 39,994.49

Step by Step Solution

1. Step 1: Write the proportion equation
   71,825.60 : 99,118.35 = 39,994.49 : x
2. Step 2: Convert to fraction form
   71,825.60/99,118.35 = 39,994.49/x
3. Step 3: Cross multiply
   71,825.60x = 99,118.35 × 39,994.49
4. Step 4: Simplify right side
   71,825.60x = 3,964,187,362.30
5. Step 5: Solve for x
   x = 3,964,187,362.30/71,825.60
6. Step 6: Final answer
   x = 55,191.85