Finding the Fourth Proportional to 28,105.27, 42,167.87 and 17,563.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,105.27 : 42,167.87 = 17,563.12 : x
2. Step 2: Convert to fraction form
   28,105.27/42,167.87 = 17,563.12/x
3. Step 3: Cross multiply
   28,105.27x = 42,167.87 × 17,563.12
4. Step 4: Simplify right side
   28,105.27x = 740,599,360.95
5. Step 5: Solve for x
   x = 740,599,360.95/28,105.27
6. Step 6: Final answer
   x = 26,350.91