Finding the Fourth Proportional to 105,728.78, 158,556.27 and 42,532.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,728.78 : 158,556.27 = 42,532.52 : x
2. Step 2: Convert to fraction form
   105,728.78/158,556.27 = 42,532.52/x
3. Step 3: Cross multiply
   105,728.78x = 158,556.27 × 42,532.52
4. Step 4: Simplify right side
   105,728.78x = 6,743,796,932.12
5. Step 5: Solve for x
   x = 6,743,796,932.12/105,728.78
6. Step 6: Final answer
   x = 63,783.93