Finding the Fourth Proportional to 52,642.94, 72,647.28 and 28,769.61

Step by Step Solution

1. Step 1: Write the proportion equation
   52,642.94 : 72,647.28 = 28,769.61 : x
2. Step 2: Convert to fraction form
   52,642.94/72,647.28 = 28,769.61/x
3. Step 3: Cross multiply
   52,642.94x = 72,647.28 × 28,769.61
4. Step 4: Simplify right side
   52,642.94x = 2,090,033,913.16
5. Step 5: Solve for x
   x = 2,090,033,913.16/52,642.94
6. Step 6: Final answer
   x = 39,702.08