Finding the Fourth Proportional to 72,763.20, 109,086.72 and 41,153.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,763.20 : 109,086.72 = 41,153.76 : x
2. Step 2: Convert to fraction form
   72,763.20/109,086.72 = 41,153.76/x
3. Step 3: Cross multiply
   72,763.20x = 109,086.72 × 41,153.76
4. Step 4: Simplify right side
   72,763.20x = 4,489,328,694.07
5. Step 5: Solve for x
   x = 4,489,328,694.07/72,763.20
6. Step 6: Final answer
   x = 61,697.79