Finding the Fourth Proportional to 110,715.10, 166,056.45 and 31,821.10

Step by Step Solution

1. Step 1: Write the proportion equation
   110,715.10 : 166,056.45 = 31,821.10 : x
2. Step 2: Convert to fraction form
   110,715.10/166,056.45 = 31,821.10/x
3. Step 3: Cross multiply
   110,715.10x = 166,056.45 × 31,821.10
4. Step 4: Simplify right side
   110,715.10x = 5,284,098,901.10
5. Step 5: Solve for x
   x = 5,284,098,901.10/110,715.10
6. Step 6: Final answer
   x = 47,726.99