Finding the Fourth Proportional to 42,012, 57,976.74 and 23,148.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012 : 57,976.74 = 23,148.72 : x
2. Step 2: Convert to fraction form
   42,012/57,976.74 = 23,148.72/x
3. Step 3: Cross multiply
   42,012x = 57,976.74 × 23,148.72
4. Step 4: Simplify right side
   42,012x = 1,342,087,320.77
5. Step 5: Solve for x
   x = 1,342,087,320.77/42,012
6. Step 6: Final answer
   x = 31,945.33