Finding the Fourth Proportional to 105,424.56, 158,131.12 and 26,538.64

Step by Step Solution

1. Step 1: Write the proportion equation
   105,424.56 : 158,131.12 = 26,538.64 : x
2. Step 2: Convert to fraction form
   105,424.56/158,131.12 = 26,538.64/x
3. Step 3: Cross multiply
   105,424.56x = 158,131.12 × 26,538.64
4. Step 4: Simplify right side
   105,424.56x = 4,196,584,866.48
5. Step 5: Solve for x
   x = 4,196,584,866.48/105,424.56
6. Step 6: Final answer
   x = 39,806.52