Finding the Fourth Proportional to 64,587.20, 89,131.86 and 35,907.73

Step by Step Solution

1. Step 1: Write the proportion equation
   64,587.20 : 89,131.86 = 35,907.73 : x
2. Step 2: Convert to fraction form
   64,587.20/89,131.86 = 35,907.73/x
3. Step 3: Cross multiply
   64,587.20x = 89,131.86 × 35,907.73
4. Step 4: Simplify right side
   64,587.20x = 3,200,522,540.45
5. Step 5: Solve for x
   x = 3,200,522,540.45/64,587.20
6. Step 6: Final answer
   x = 49,553.52