Finding the Fourth Proportional to 52,438.56, 72,372.72 and 31,217.28

Step by Step Solution

1. Step 1: Write the proportion equation
   52,438.56 : 72,372.72 = 31,217.28 : x
2. Step 2: Convert to fraction form
   52,438.56/72,372.72 = 31,217.28/x
3. Step 3: Cross multiply
   52,438.56x = 72,372.72 × 31,217.28
4. Step 4: Simplify right side
   52,438.56x = 2,259,279,464.60
5. Step 5: Solve for x
   x = 2,259,279,464.60/52,438.56
6. Step 6: Final answer
   x = 43,084.32