Finding the Fourth Proportional to 64,621.42, 89,185.53 and 36,326.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,621.42 : 89,185.53 = 36,326.50 : x
2. Step 2: Convert to fraction form
   64,621.42/89,185.53 = 36,326.50/x
3. Step 3: Cross multiply
   64,621.42x = 89,185.53 × 36,326.50
4. Step 4: Simplify right side
   64,621.42x = 3,239,798,155.55
5. Step 5: Solve for x
   x = 3,239,798,155.55/64,621.42
6. Step 6: Final answer
   x = 50,135.05