Finding the Fourth Proportional to 65,655, 90,341.45 and 63,817.92

Step by Step Solution

1. Step 1: Write the proportion equation
   65,655 : 90,341.45 = 63,817.92 : x
2. Step 2: Convert to fraction form
   65,655/90,341.45 = 63,817.92/x
3. Step 3: Cross multiply
   65,655x = 90,341.45 × 63,817.92
4. Step 4: Simplify right side
   65,655x = 5,765,403,428.78
5. Step 5: Solve for x
   x = 5,765,403,428.78/65,655
6. Step 6: Final answer
   x = 87,813.62