Finding the Fourth Proportional to 72,757.37, 100,403.69 and 42,560.57

Step by Step Solution

1. Step 1: Write the proportion equation
   72,757.37 : 100,403.69 = 42,560.57 : x
2. Step 2: Convert to fraction form
   72,757.37/100,403.69 = 42,560.57/x
3. Step 3: Cross multiply
   72,757.37x = 100,403.69 × 42,560.57
4. Step 4: Simplify right side
   72,757.37x = 4,273,238,063.70
5. Step 5: Solve for x
   x = 4,273,238,063.70/72,757.37
6. Step 6: Final answer
   x = 58,732.72