Finding the Fourth Proportional to 52,171.52, 78,269.42 and 17,109.05

Step by Step Solution

1. Step 1: Write the proportion equation
   52,171.52 : 78,269.42 = 17,109.05 : x
2. Step 2: Convert to fraction form
   52,171.52/78,269.42 = 17,109.05/x
3. Step 3: Cross multiply
   52,171.52x = 78,269.42 × 17,109.05
4. Step 4: Simplify right side
   52,171.52x = 1,339,115,071.68
5. Step 5: Solve for x
   x = 1,339,115,071.68/52,171.52
6. Step 6: Final answer
   x = 25,667.55