Finding the Fourth Proportional to 42,738.15, 58,945.02 and 39,873.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,738.15 : 58,945.02 = 39,873.39 : x
2. Step 2: Convert to fraction form
   42,738.15/58,945.02 = 39,873.39/x
3. Step 3: Cross multiply
   42,738.15x = 58,945.02 × 39,873.39
4. Step 4: Simplify right side
   42,738.15x = 2,350,337,771.02
5. Step 5: Solve for x
   x = 2,350,337,771.02/42,738.15
6. Step 6: Final answer
   x = 54,993.91