Finding the Fourth Proportional to 105,570.12, 158,355.30 and 31,698.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,570.12 : 158,355.30 = 31,698.12 : x
2. Step 2: Convert to fraction form
   105,570.12/158,355.30 = 31,698.12/x
3. Step 3: Cross multiply
   105,570.12x = 158,355.30 × 31,698.12
4. Step 4: Simplify right side
   105,570.12x = 5,019,565,302.04
5. Step 5: Solve for x
   x = 5,019,565,302.04/105,570.12
6. Step 6: Final answer
   x = 47,547.22