Finding the Fourth Proportional to 70,945.91, 106,371.20 and 28,223.04

Step by Step Solution

1. Step 1: Write the proportion equation
   70,945.91 : 106,371.20 = 28,223.04 : x
2. Step 2: Convert to fraction form
   70,945.91/106,371.20 = 28,223.04/x
3. Step 3: Cross multiply
   70,945.91x = 106,371.20 × 28,223.04
4. Step 4: Simplify right side
   70,945.91x = 3,002,118,632.45
5. Step 5: Solve for x
   x = 3,002,118,632.45/70,945.91
6. Step 6: Final answer
   x = 42,315.60