Finding the Fourth Proportional to 72,035.75, 99,414.81 and 39,776.58

Step by Step Solution

1. Step 1: Write the proportion equation
   72,035.75 : 99,414.81 = 39,776.58 : x
2. Step 2: Convert to fraction form
   72,035.75/99,414.81 = 39,776.58/x
3. Step 3: Cross multiply
   72,035.75x = 99,414.81 × 39,776.58
4. Step 4: Simplify right side
   72,035.75x = 3,954,381,143.15
5. Step 5: Solve for x
   x = 3,954,381,143.15/72,035.75
6. Step 6: Final answer
   x = 54,894.71