Finding the Fourth Proportional to 57,612.52, 79,505.28 and 31,116.52

Step by Step Solution

1. Step 1: Write the proportion equation
   57,612.52 : 79,505.28 = 31,116.52 : x
2. Step 2: Convert to fraction form
   57,612.52/79,505.28 = 31,116.52/x
3. Step 3: Cross multiply
   57,612.52x = 79,505.28 × 31,116.52
4. Step 4: Simplify right side
   57,612.52x = 2,473,927,635.23
5. Step 5: Solve for x
   x = 2,473,927,635.23/57,612.52
6. Step 6: Final answer
   x = 42,940.80