Finding the Fourth Proportional to 65,178.20, 89,940.56 and 38,321.84

Step by Step Solution

1. Step 1: Write the proportion equation
   65,178.20 : 89,940.56 = 38,321.84 : x
2. Step 2: Convert to fraction form
   65,178.20/89,940.56 = 38,321.84/x
3. Step 3: Cross multiply
   65,178.20x = 89,940.56 × 38,321.84
4. Step 4: Simplify right side
   65,178.20x = 3,446,687,749.83
5. Step 5: Solve for x
   x = 3,446,687,749.83/65,178.20
6. Step 6: Final answer
   x = 52,880.99