Finding the Fourth Proportional to 52,978.61, 79,465.86 and 17,918.27

Step by Step Solution

1. Step 1: Write the proportion equation
   52,978.61 : 79,465.86 = 17,918.27 : x
2. Step 2: Convert to fraction form
   52,978.61/79,465.86 = 17,918.27/x
3. Step 3: Cross multiply
   52,978.61x = 79,465.86 × 17,918.27
4. Step 4: Simplify right side
   52,978.61x = 1,423,890,524.18
5. Step 5: Solve for x
   x = 1,423,890,524.18/52,978.61
6. Step 6: Final answer
   x = 26,876.71