Finding the Fourth Proportional to 52,730.55, 72,756.88 and 31,227.05

Step by Step Solution

1. Step 1: Write the proportion equation
   52,730.55 : 72,756.88 = 31,227.05 : x
2. Step 2: Convert to fraction form
   52,730.55/72,756.88 = 31,227.05/x
3. Step 3: Cross multiply
   52,730.55x = 72,756.88 × 31,227.05
4. Step 4: Simplify right side
   52,730.55x = 2,271,982,365.82
5. Step 5: Solve for x
   x = 2,271,982,365.82/52,730.55
6. Step 6: Final answer
   x = 43,086.65