Finding the Fourth Proportional to 56,727, 78,283.26 and 31,578.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,727 : 78,283.26 = 31,578.12 : x
2. Step 2: Convert to fraction form
   56,727/78,283.26 = 31,578.12/x
3. Step 3: Cross multiply
   56,727x = 78,283.26 × 31,578.12
4. Step 4: Simplify right side
   56,727x = 2,472,038,178.27
5. Step 5: Solve for x
   x = 2,472,038,178.27/56,727
6. Step 6: Final answer
   x = 43,577.81