Finding the Fourth Proportional to 105,617.97, 158,446.94 and 42,443.01

Step by Step Solution

1. Step 1: Write the proportion equation
   105,617.97 : 158,446.94 = 42,443.01 : x
2. Step 2: Convert to fraction form
   105,617.97/158,446.94 = 42,443.01/x
3. Step 3: Cross multiply
   105,617.97x = 158,446.94 × 42,443.01
4. Step 4: Simplify right side
   105,617.97x = 6,724,964,846.67
5. Step 5: Solve for x
   x = 6,724,964,846.67/105,617.97
6. Step 6: Final answer
   x = 63,672.54