Finding the Fourth Proportional to 57,778, 79,733.76 and 31,282

Step by Step Solution

1. Step 1: Write the proportion equation
   57,778 : 79,733.76 = 31,282 : x
2. Step 2: Convert to fraction form
   57,778/79,733.76 = 31,282/x
3. Step 3: Cross multiply
   57,778x = 79,733.76 × 31,282
4. Step 4: Simplify right side
   57,778x = 2,494,231,480.32
5. Step 5: Solve for x
   x = 2,494,231,480.32/57,778
6. Step 6: Final answer
   x = 43,169.22