Finding the Fourth Proportional to 57,704, 79,631.60 and 31,208

Step by Step Solution

1. Step 1: Write the proportion equation
   57,704 : 79,631.60 = 31,208 : x
2. Step 2: Convert to fraction form
   57,704/79,631.60 = 31,208/x
3. Step 3: Cross multiply
   57,704x = 79,631.60 × 31,208
4. Step 4: Simplify right side
   57,704x = 2,485,142,972.80
5. Step 5: Solve for x
   x = 2,485,142,972.80/57,704
6. Step 6: Final answer
   x = 43,067.08