Finding the Fourth Proportional to 52,686.18, 79,012.71 and 17,617.59

Step by Step Solution

1. Step 1: Write the proportion equation
   52,686.18 : 79,012.71 = 17,617.59 : x
2. Step 2: Convert to fraction form
   52,686.18/79,012.71 = 17,617.59/x
3. Step 3: Cross multiply
   52,686.18x = 79,012.71 × 17,617.59
4. Step 4: Simplify right side
   52,686.18x = 1,392,013,529.57
5. Step 5: Solve for x
   x = 1,392,013,529.57/52,686.18
6. Step 6: Final answer
   x = 26,420.85