Finding the Fourth Proportional to 43,868.15, 60,510.17 and 28,761.78

Step by Step Solution

1. Step 1: Write the proportion equation
   43,868.15 : 60,510.17 = 28,761.78 : x
2. Step 2: Convert to fraction form
   43,868.15/60,510.17 = 28,761.78/x
3. Step 3: Cross multiply
   43,868.15x = 60,510.17 × 28,761.78
4. Step 4: Simplify right side
   43,868.15x = 1,740,380,496.12
5. Step 5: Solve for x
   x = 1,740,380,496.12/43,868.15
6. Step 6: Final answer
   x = 39,672.99