Finding the Fourth Proportional to 106,500.72, 159,723.68 and 31,603.12

Step by Step Solution

1. Step 1: Write the proportion equation
   106,500.72 : 159,723.68 = 31,603.12 : x
2. Step 2: Convert to fraction form
   106,500.72/159,723.68 = 31,603.12/x
3. Step 3: Cross multiply
   106,500.72x = 159,723.68 × 31,603.12
4. Step 4: Simplify right side
   106,500.72x = 5,047,766,625.88
5. Step 5: Solve for x
   x = 5,047,766,625.88/106,500.72
6. Step 6: Final answer
   x = 47,396.55