Finding the Fourth Proportional to 71,772.56, 99,039.72 and 41,559.92

Step by Step Solution

1. Step 1: Write the proportion equation
   71,772.56 : 99,039.72 = 41,559.92 : x
2. Step 2: Convert to fraction form
   71,772.56/99,039.72 = 41,559.92/x
3. Step 3: Cross multiply
   71,772.56x = 99,039.72 × 41,559.92
4. Step 4: Simplify right side
   71,772.56x = 4,116,082,840.02
5. Step 5: Solve for x
   x = 4,116,082,840.02/71,772.56
6. Step 6: Final answer
   x = 57,348.98