Finding the Fourth Proportional to 65,491.31, 90,378.01 and 35,683.31

Step by Step Solution

1. Step 1: Write the proportion equation
   65,491.31 : 90,378.01 = 35,683.31 : x
2. Step 2: Convert to fraction form
   65,491.31/90,378.01 = 35,683.31/x
3. Step 3: Cross multiply
   65,491.31x = 90,378.01 × 35,683.31
4. Step 4: Simplify right side
   65,491.31x = 3,224,986,818.56
5. Step 5: Solve for x
   x = 3,224,986,818.56/65,491.31
6. Step 6: Final answer
   x = 49,242.97