Finding the Fourth Proportional to 108,071.28, 162,105.52 and 28,102.16

Step by Step Solution

1. Step 1: Write the proportion equation
   108,071.28 : 162,105.52 = 28,102.16 : x
2. Step 2: Convert to fraction form
   108,071.28/162,105.52 = 28,102.16/x
3. Step 3: Cross multiply
   108,071.28x = 162,105.52 × 28,102.16
4. Step 4: Simplify right side
   108,071.28x = 4,555,515,259.92
5. Step 5: Solve for x
   x = 4,555,515,259.92/108,071.28
6. Step 6: Final answer
   x = 42,152.88