Finding the Fourth Proportional to 42,012, 57,976.72 and 23,149.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012 : 57,976.72 = 23,149.12 : x
2. Step 2: Convert to fraction form
   42,012/57,976.72 = 23,149.12/x
3. Step 3: Cross multiply
   42,012x = 57,976.72 × 23,149.12
4. Step 4: Simplify right side
   42,012x = 1,342,110,048.49
5. Step 5: Solve for x
   x = 1,342,110,048.49/42,012
6. Step 6: Final answer
   x = 31,945.87