Finding the Fourth Proportional to 52,321.30, 72,201.42 and 28,447.15

Step by Step Solution

1. Step 1: Write the proportion equation
   52,321.30 : 72,201.42 = 28,447.15 : x
2. Step 2: Convert to fraction form
   52,321.30/72,201.42 = 28,447.15/x
3. Step 3: Cross multiply
   52,321.30x = 72,201.42 × 28,447.15
4. Step 4: Simplify right side
   52,321.30x = 2,053,924,624.95
5. Step 5: Solve for x
   x = 2,053,924,624.95/52,321.30
6. Step 6: Final answer
   x = 39,255.99