Finding the Fourth Proportional to 72,469.58, 100,010.55 and 42,249.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,469.58 : 100,010.55 = 42,249.78 : x
2. Step 2: Convert to fraction form
   72,469.58/100,010.55 = 42,249.78/x
3. Step 3: Cross multiply
   72,469.58x = 100,010.55 × 42,249.78
4. Step 4: Simplify right side
   72,469.58x = 4,225,423,735.18
5. Step 5: Solve for x
   x = 4,225,423,735.18/72,469.58
6. Step 6: Final answer
   x = 58,306.18