Finding the Fourth Proportional to 65,789.72, 90,789.74 and 35,574.97

Step by Step Solution

1. Step 1: Write the proportion equation
   65,789.72 : 90,789.74 = 35,574.97 : x
2. Step 2: Convert to fraction form
   65,789.72/90,789.74 = 35,574.97/x
3. Step 3: Cross multiply
   65,789.72x = 90,789.74 × 35,574.97
4. Step 4: Simplify right side
   65,789.72x = 3,229,841,822.86
5. Step 5: Solve for x
   x = 3,229,841,822.86/65,789.72
6. Step 6: Final answer
   x = 49,093.42