Finding the Fourth Proportional to 72,377.98, 99,942.79 and 54,441.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,377.98 : 99,942.79 = 54,441.74 : x
2. Step 2: Convert to fraction form
   72,377.98/99,942.79 = 54,441.74/x
3. Step 3: Cross multiply
   72,377.98x = 99,942.79 × 54,441.74
4. Step 4: Simplify right side
   72,377.98x = 5,441,059,388.05
5. Step 5: Solve for x
   x = 5,441,059,388.05/72,377.98
6. Step 6: Final answer
   x = 75,175.62