Finding the Fourth Proportional to 65,992.98, 91,063.49 and 40,500.42

Step by Step Solution

1. Step 1: Write the proportion equation
   65,992.98 : 91,063.49 = 40,500.42 : x
2. Step 2: Convert to fraction form
   65,992.98/91,063.49 = 40,500.42/x
3. Step 3: Cross multiply
   65,992.98x = 91,063.49 × 40,500.42
4. Step 4: Simplify right side
   65,992.98x = 3,688,109,692.92
5. Step 5: Solve for x
   x = 3,688,109,692.92/65,992.98
6. Step 6: Final answer
   x = 55,886.39