Finding the Fourth Proportional to 30,595.20, 42,219.72 and 17,164.08

Step by Step Solution

1. Step 1: Write the proportion equation
   30,595.20 : 42,219.72 = 17,164.08 : x
2. Step 2: Convert to fraction form
   30,595.20/42,219.72 = 17,164.08/x
3. Step 3: Cross multiply
   30,595.20x = 42,219.72 × 17,164.08
4. Step 4: Simplify right side
   30,595.20x = 724,662,651.66
5. Step 5: Solve for x
   x = 724,662,651.66/30,595.20
6. Step 6: Final answer
   x = 23,685.50