Finding the Fourth Proportional to 105,728.28, 158,592.69 and 35,656.80

Step by Step Solution

1. Step 1: Write the proportion equation
   105,728.28 : 158,592.69 = 35,656.80 : x
2. Step 2: Convert to fraction form
   105,728.28/158,592.69 = 35,656.80/x
3. Step 3: Cross multiply
   105,728.28x = 158,592.69 × 35,656.80
4. Step 4: Simplify right side
   105,728.28x = 5,654,907,828.79
5. Step 5: Solve for x
   x = 5,654,907,828.79/105,728.28
6. Step 6: Final answer
   x = 53,485.29