Finding the Fourth Proportional to 52,216.45, 72,059.06 and 28,343.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,216.45 : 72,059.06 = 28,343.12 : x
2. Step 2: Convert to fraction form
   52,216.45/72,059.06 = 28,343.12/x
3. Step 3: Cross multiply
   52,216.45x = 72,059.06 × 28,343.12
4. Step 4: Simplify right side
   52,216.45x = 2,042,378,584.67
5. Step 5: Solve for x
   x = 2,042,378,584.67/52,216.45
6. Step 6: Final answer
   x = 39,113.70