Finding the Fourth Proportional to 72,399.76, 99,914.46 and 42,204.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,399.76 : 99,914.46 = 42,204.56 : x
2. Step 2: Convert to fraction form
   72,399.76/99,914.46 = 42,204.56/x
3. Step 3: Cross multiply
   72,399.76x = 99,914.46 × 42,204.56
4. Step 4: Simplify right side
   72,399.76x = 4,216,845,821.94
5. Step 5: Solve for x
   x = 4,216,845,821.94/72,399.76
6. Step 6: Final answer
   x = 58,243.92