Finding the Fourth Proportional to 70,846.72, 106,294.68 and 31,431.51

Step by Step Solution

1. Step 1: Write the proportion equation
   70,846.72 : 106,294.68 = 31,431.51 : x
2. Step 2: Convert to fraction form
   70,846.72/106,294.68 = 31,431.51/x
3. Step 3: Cross multiply
   70,846.72x = 106,294.68 × 31,431.51
4. Step 4: Simplify right side
   70,846.72x = 3,341,002,297.37
5. Step 5: Solve for x
   x = 3,341,002,297.37/70,846.72
6. Step 6: Final answer
   x = 47,158.18