Finding the Fourth Proportional to 52,819.33, 72,890.67 and 28,946.55

Step by Step Solution

1. Step 1: Write the proportion equation
   52,819.33 : 72,890.67 = 28,946.55 : x
2. Step 2: Convert to fraction form
   52,819.33/72,890.67 = 28,946.55/x
3. Step 3: Cross multiply
   52,819.33x = 72,890.67 × 28,946.55
4. Step 4: Simplify right side
   52,819.33x = 2,109,933,423.69
5. Step 5: Solve for x
   x = 2,109,933,423.69/52,819.33
6. Step 6: Final answer
   x = 39,946.24