Finding the Fourth Proportional to 65,654.50, 90,340.76 and 63,817.42

Step by Step Solution

1. Step 1: Write the proportion equation
   65,654.50 : 90,340.76 = 63,817.42 : x
2. Step 2: Convert to fraction form
   65,654.50/90,340.76 = 63,817.42/x
3. Step 3: Cross multiply
   65,654.50x = 90,340.76 × 63,817.42
4. Step 4: Simplify right side
   65,654.50x = 5,765,314,224.04
5. Step 5: Solve for x
   x = 5,765,314,224.04/65,654.50
6. Step 6: Final answer
   x = 87,812.93