Finding the Fourth Proportional to 57,423.33, 86,131.35 and 17,979.57

Step by Step Solution

1. Step 1: Write the proportion equation
   57,423.33 : 86,131.35 = 17,979.57 : x
2. Step 2: Convert to fraction form
   57,423.33/86,131.35 = 17,979.57/x
3. Step 3: Cross multiply
   57,423.33x = 86,131.35 × 17,979.57
4. Step 4: Simplify right side
   57,423.33x = 1,548,604,636.52
5. Step 5: Solve for x
   x = 1,548,604,636.52/57,423.33
6. Step 6: Final answer
   x = 26,968.21