Finding the Fourth Proportional to 57,760.50, 79,709.73 and 31,264.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,760.50 : 79,709.73 = 31,264.50 : x
2. Step 2: Convert to fraction form
   57,760.50/79,709.73 = 31,264.50/x
3. Step 3: Cross multiply
   57,760.50x = 79,709.73 × 31,264.50
4. Step 4: Simplify right side
   57,760.50x = 2,492,084,853.59
5. Step 5: Solve for x
   x = 2,492,084,853.59/57,760.50
6. Step 6: Final answer
   x = 43,145.14