Finding the Fourth Proportional to 64,629.50, 89,188.59 and 36,335.18

Step by Step Solution

1. Step 1: Write the proportion equation
   64,629.50 : 89,188.59 = 36,335.18 : x
2. Step 2: Convert to fraction form
   64,629.50/89,188.59 = 36,335.18/x
3. Step 3: Cross multiply
   64,629.50x = 89,188.59 × 36,335.18
4. Step 4: Simplify right side
   64,629.50x = 3,240,683,830.82
5. Step 5: Solve for x
   x = 3,240,683,830.82/64,629.50
6. Step 6: Final answer
   x = 50,142.49