Finding the Fourth Proportional to 52,644.96, 72,649.88 and 28,771.63

Step by Step Solution

1. Step 1: Write the proportion equation
   52,644.96 : 72,649.88 = 28,771.63 : x
2. Step 2: Convert to fraction form
   52,644.96/72,649.88 = 28,771.63/x
3. Step 3: Cross multiply
   52,644.96x = 72,649.88 × 28,771.63
4. Step 4: Simplify right side
   52,644.96x = 2,090,255,141.42
5. Step 5: Solve for x
   x = 2,090,255,141.42/52,644.96
6. Step 6: Final answer
   x = 39,704.75