Finding the Fourth Proportional to 105,857.51, 158,665.46 and 42,637.14

Step by Step Solution

1. Step 1: Write the proportion equation
   105,857.51 : 158,665.46 = 42,637.14 : x
2. Step 2: Convert to fraction form
   105,857.51/158,665.46 = 42,637.14/x
3. Step 3: Cross multiply
   105,857.51x = 158,665.46 × 42,637.14
4. Step 4: Simplify right side
   105,857.51x = 6,765,041,218.00
5. Step 5: Solve for x
   x = 6,765,041,218.00/105,857.51
6. Step 6: Final answer
   x = 63,907.05