Finding the Fourth Proportional to 71,100.43, 106,670.10 and 31,112.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,100.43 : 106,670.10 = 31,112.15 : x
2. Step 2: Convert to fraction form
   71,100.43/106,670.10 = 31,112.15/x
3. Step 3: Cross multiply
   71,100.43x = 106,670.10 × 31,112.15
4. Step 4: Simplify right side
   71,100.43x = 3,318,735,462.80
5. Step 5: Solve for x
   x = 3,318,735,462.80/71,100.43
6. Step 6: Final answer
   x = 46,676.73