Finding the Fourth Proportional to 52,217.25, 72,061.31 and 28,345.43

Step by Step Solution

1. Step 1: Write the proportion equation
   52,217.25 : 72,061.31 = 28,345.43 : x
2. Step 2: Convert to fraction form
   52,217.25/72,061.31 = 28,345.43/x
3. Step 3: Cross multiply
   52,217.25x = 72,061.31 × 28,345.43
4. Step 4: Simplify right side
   52,217.25x = 2,042,608,818.31
5. Step 5: Solve for x
   x = 2,042,608,818.31/52,217.25
6. Step 6: Final answer
   x = 39,117.51