Finding the Fourth Proportional to 52,279.16, 72,145.89 and 28,406.23

Step by Step Solution

1. Step 1: Write the proportion equation
   52,279.16 : 72,145.89 = 28,406.23 : x
2. Step 2: Convert to fraction form
   52,279.16/72,145.89 = 28,406.23/x
3. Step 3: Cross multiply
   52,279.16x = 72,145.89 × 28,406.23
4. Step 4: Simplify right side
   52,279.16x = 2,049,392,744.89
5. Step 5: Solve for x
   x = 2,049,392,744.89/52,279.16
6. Step 6: Final answer
   x = 39,200.95