Finding the Fourth Proportional to 42,012.28, 57,976.59 and 23,149

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.28 : 57,976.59 = 23,149 : x
2. Step 2: Convert to fraction form
   42,012.28/57,976.59 = 23,149/x
3. Step 3: Cross multiply
   42,012.28x = 57,976.59 × 23,149
4. Step 4: Simplify right side
   42,012.28x = 1,342,100,081.91
5. Step 5: Solve for x
   x = 1,342,100,081.91/42,012.28
6. Step 6: Final answer
   x = 31,945.42