Finding the Fourth Proportional to 105,424.16, 158,135.76 and 26,538.42

Step by Step Solution

1. Step 1: Write the proportion equation
   105,424.16 : 158,135.76 = 26,538.42 : x
2. Step 2: Convert to fraction form
   105,424.16/158,135.76 = 26,538.42/x
3. Step 3: Cross multiply
   105,424.16x = 158,135.76 × 26,538.42
4. Step 4: Simplify right side
   105,424.16x = 4,196,673,215.90
5. Step 5: Solve for x
   x = 4,196,673,215.90/105,424.16
6. Step 6: Final answer
   x = 39,807.51