Finding the Fourth Proportional to 108,224.34, 162,345.69 and 28,272.90

Step by Step Solution

1. Step 1: Write the proportion equation
   108,224.34 : 162,345.69 = 28,272.90 : x
2. Step 2: Convert to fraction form
   108,224.34/162,345.69 = 28,272.90/x
3. Step 3: Cross multiply
   108,224.34x = 162,345.69 × 28,272.90
4. Step 4: Simplify right side
   108,224.34x = 4,589,983,458.80
5. Step 5: Solve for x
   x = 4,589,983,458.80/108,224.34
6. Step 6: Final answer
   x = 42,411.75