Finding the Fourth Proportional to 65,898.28, 90,939.80 and 35,683.98

Step by Step Solution

1. Step 1: Write the proportion equation
   65,898.28 : 90,939.80 = 35,683.98 : x
2. Step 2: Convert to fraction form
   65,898.28/90,939.80 = 35,683.98/x
3. Step 3: Cross multiply
   65,898.28x = 90,939.80 × 35,683.98
4. Step 4: Simplify right side
   65,898.28x = 3,245,094,004.40
5. Step 5: Solve for x
   x = 3,245,094,004.40/65,898.28
6. Step 6: Final answer
   x = 49,243.99