Finding the Fourth Proportional to 105,814.66, 158,720.25 and 42,633.25

Step by Step Solution

1. Step 1: Write the proportion equation
   105,814.66 : 158,720.25 = 42,633.25 : x
2. Step 2: Convert to fraction form
   105,814.66/158,720.25 = 42,633.25/x
3. Step 3: Cross multiply
   105,814.66x = 158,720.25 × 42,633.25
4. Step 4: Simplify right side
   105,814.66x = 6,766,760,098.31
5. Step 5: Solve for x
   x = 6,766,760,098.31/105,814.66
6. Step 6: Final answer
   x = 63,949.17