Finding the Fourth Proportional to 42,012.19, 57,976.76 and 23,149.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.19 : 57,976.76 = 23,149.31 : x
2. Step 2: Convert to fraction form
   42,012.19/57,976.76 = 23,149.31/x
3. Step 3: Cross multiply
   42,012.19x = 57,976.76 × 23,149.31
4. Step 4: Simplify right side
   42,012.19x = 1,342,122,084.14
5. Step 5: Solve for x
   x = 1,342,122,084.14/42,012.19
6. Step 6: Final answer
   x = 31,946.02