Finding the Fourth Proportional to 52,288.35, 72,156.87 and 28,415.63

Step by Step Solution

1. Step 1: Write the proportion equation
   52,288.35 : 72,156.87 = 28,415.63 : x
2. Step 2: Convert to fraction form
   52,288.35/72,156.87 = 28,415.63/x
3. Step 3: Cross multiply
   52,288.35x = 72,156.87 × 28,415.63
4. Step 4: Simplify right side
   52,288.35x = 2,050,382,559.09
5. Step 5: Solve for x
   x = 2,050,382,559.09/52,288.35
6. Step 6: Final answer
   x = 39,212.99