Finding the Fourth Proportional to 70,815.14, 106,173.50 and 31,350.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,815.14 : 106,173.50 = 31,350.72 : x
2. Step 2: Convert to fraction form
   70,815.14/106,173.50 = 31,350.72/x
3. Step 3: Cross multiply
   70,815.14x = 106,173.50 × 31,350.72
4. Step 4: Simplify right side
   70,815.14x = 3,328,615,513.17
5. Step 5: Solve for x
   x = 3,328,615,513.17/70,815.14
6. Step 6: Final answer
   x = 47,004.30