Finding the Fourth Proportional to 65,827, 90,758.91 and 54,940.87

Step by Step Solution

1. Step 1: Write the proportion equation
   65,827 : 90,758.91 = 54,940.87 : x
2. Step 2: Convert to fraction form
   65,827/90,758.91 = 54,940.87/x
3. Step 3: Cross multiply
   65,827x = 90,758.91 × 54,940.87
4. Step 4: Simplify right side
   65,827x = 4,986,373,475.65
5. Step 5: Solve for x
   x = 4,986,373,475.65/65,827
6. Step 6: Final answer
   x = 75,749.67