Finding the Fourth Proportional to 105,814.16, 158,719.50 and 42,632.75

Step by Step Solution

1. Step 1: Write the proportion equation
   105,814.16 : 158,719.50 = 42,632.75 : x
2. Step 2: Convert to fraction form
   105,814.16/158,719.50 = 42,632.75/x
3. Step 3: Cross multiply
   105,814.16x = 158,719.50 × 42,632.75
4. Step 4: Simplify right side
   105,814.16x = 6,766,647,970.03
5. Step 5: Solve for x
   x = 6,766,647,970.03/105,814.16
6. Step 6: Final answer
   x = 63,948.42