Finding the Fourth Proportional to 45,731.88, 68,320.71 and 28,957.59

Step by Step Solution

1. Step 1: Write the proportion equation
   45,731.88 : 68,320.71 = 28,957.59 : x
2. Step 2: Convert to fraction form
   45,731.88/68,320.71 = 28,957.59/x
3. Step 3: Cross multiply
   45,731.88x = 68,320.71 × 28,957.59
4. Step 4: Simplify right side
   45,731.88x = 1,978,403,108.69
5. Step 5: Solve for x
   x = 1,978,403,108.69/45,731.88
6. Step 6: Final answer
   x = 43,260.92