Finding the Fourth Proportional to 57,440.54, 79,245.42 and 42,369.42

Step by Step Solution

1. Step 1: Write the proportion equation
   57,440.54 : 79,245.42 = 42,369.42 : x
2. Step 2: Convert to fraction form
   57,440.54/79,245.42 = 42,369.42/x
3. Step 3: Cross multiply
   57,440.54x = 79,245.42 × 42,369.42
4. Step 4: Simplify right side
   57,440.54x = 3,357,582,483.06
5. Step 5: Solve for x
   x = 3,357,582,483.06/57,440.54
6. Step 6: Final answer
   x = 58,453.18