Finding the Fourth Proportional to 41,991.56, 57,948.35 and 23,128.69

Step by Step Solution

1. Step 1: Write the proportion equation
   41,991.56 : 57,948.35 = 23,128.69 : x
2. Step 2: Convert to fraction form
   41,991.56/57,948.35 = 23,128.69/x
3. Step 3: Cross multiply
   41,991.56x = 57,948.35 × 23,128.69
4. Step 4: Simplify right side
   41,991.56x = 1,340,269,133.42
5. Step 5: Solve for x
   x = 1,340,269,133.42/41,991.56
6. Step 6: Final answer
   x = 31,917.58