Finding the Fourth Proportional to 52,478.38, 72,417.94 and 28,604.49

Step by Step Solution

1. Step 1: Write the proportion equation
   52,478.38 : 72,417.94 = 28,604.49 : x
2. Step 2: Convert to fraction form
   52,478.38/72,417.94 = 28,604.49/x
3. Step 3: Cross multiply
   52,478.38x = 72,417.94 × 28,604.49
4. Step 4: Simplify right side
   52,478.38x = 2,071,478,240.55
5. Step 5: Solve for x
   x = 2,071,478,240.55/52,478.38
6. Step 6: Final answer
   x = 39,472.98