Finding the Fourth Proportional to 42,009.60, 57,974.31 and 23,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,009.60 : 57,974.31 = 23,146.72 : x
2. Step 2: Convert to fraction form
   42,009.60/57,974.31 = 23,146.72/x
3. Step 3: Cross multiply
   42,009.60x = 57,974.31 × 23,146.72
4. Step 4: Simplify right side
   42,009.60x = 1,341,915,120.76
5. Step 5: Solve for x
   x = 1,341,915,120.76/42,009.60
6. Step 6: Final answer
   x = 31,943.06