Finding the Fourth Proportional to 71,826.57, 99,119.72 and 39,560.57

Step by Step Solution

1. Step 1: Write the proportion equation
   71,826.57 : 99,119.72 = 39,560.57 : x
2. Step 2: Convert to fraction form
   71,826.57/99,119.72 = 39,560.57/x
3. Step 3: Cross multiply
   71,826.57x = 99,119.72 × 39,560.57
4. Step 4: Simplify right side
   71,826.57x = 3,921,231,928.04
5. Step 5: Solve for x
   x = 3,921,231,928.04/71,826.57
6. Step 6: Final answer
   x = 54,593.06