Finding the Fourth Proportional to 52,678.74, 72,696.69 and 28,805.61

Step by Step Solution

1. Step 1: Write the proportion equation
   52,678.74 : 72,696.69 = 28,805.61 : x
2. Step 2: Convert to fraction form
   52,678.74/72,696.69 = 28,805.61/x
3. Step 3: Cross multiply
   52,678.74x = 72,696.69 × 28,805.61
4. Step 4: Simplify right side
   52,678.74x = 2,094,072,500.43
5. Step 5: Solve for x
   x = 2,094,072,500.43/52,678.74
6. Step 6: Final answer
   x = 39,751.76