Finding the Fourth Proportional to 52,215.48, 78,317.10 and 17,146.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,215.48 : 78,317.10 = 17,146.50 : x
2. Step 2: Convert to fraction form
   52,215.48/78,317.10 = 17,146.50/x
3. Step 3: Cross multiply
   52,215.48x = 78,317.10 × 17,146.50
4. Step 4: Simplify right side
   52,215.48x = 1,342,864,155.15
5. Step 5: Solve for x
   x = 1,342,864,155.15/52,215.48
6. Step 6: Final answer
   x = 25,717.74