Finding the Fourth Proportional to 105,571.62, 158,357.55 and 31,699.62

Step by Step Solution

1. Step 1: Write the proportion equation
   105,571.62 : 158,357.55 = 31,699.62 : x
2. Step 2: Convert to fraction form
   105,571.62/158,357.55 = 31,699.62/x
3. Step 3: Cross multiply
   105,571.62x = 158,357.55 × 31,699.62
4. Step 4: Simplify right side
   105,571.62x = 5,019,874,159.13
5. Step 5: Solve for x
   x = 5,019,874,159.13/105,571.62
6. Step 6: Final answer
   x = 47,549.47