Finding the Fourth Proportional to 57,423.78, 79,222.68 and 42,352.16

Step by Step Solution

1. Step 1: Write the proportion equation
   57,423.78 : 79,222.68 = 42,352.16 : x
2. Step 2: Convert to fraction form
   57,423.78/79,222.68 = 42,352.16/x
3. Step 3: Cross multiply
   57,423.78x = 79,222.68 × 42,352.16
4. Step 4: Simplify right side
   57,423.78x = 3,355,251,222.88
5. Step 5: Solve for x
   x = 3,355,251,222.88/57,423.78
6. Step 6: Final answer
   x = 58,429.65