Finding the Fourth Proportional to 29,061.57, 40,113.60 and 17,128.77

Step by Step Solution

1. Step 1: Write the proportion equation
   29,061.57 : 40,113.60 = 17,128.77 : x
2. Step 2: Convert to fraction form
   29,061.57/40,113.60 = 17,128.77/x
3. Step 3: Cross multiply
   29,061.57x = 40,113.60 × 17,128.77
4. Step 4: Simplify right side
   29,061.57x = 687,096,628.27
5. Step 5: Solve for x
   x = 687,096,628.27/29,061.57
6. Step 6: Final answer
   x = 23,642.79