Finding the Fourth Proportional to 52,342.62, 72,230.72 and 28,469.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,342.62 : 72,230.72 = 28,469.31 : x
2. Step 2: Convert to fraction form
   52,342.62/72,230.72 = 28,469.31/x
3. Step 3: Cross multiply
   52,342.62x = 72,230.72 × 28,469.31
4. Step 4: Simplify right side
   52,342.62x = 2,056,358,255.70
5. Step 5: Solve for x
   x = 2,056,358,255.70/52,342.62
6. Step 6: Final answer
   x = 39,286.50