Finding the Fourth Proportional to 64,834.17, 89,467.71 and 36,156.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,834.17 : 89,467.71 = 36,156.78 : x
2. Step 2: Convert to fraction form
   64,834.17/89,467.71 = 36,156.78/x
3. Step 3: Cross multiply
   64,834.17x = 89,467.71 × 36,156.78
4. Step 4: Simplify right side
   64,834.17x = 3,234,864,171.99
5. Step 5: Solve for x
   x = 3,234,864,171.99/64,834.17
6. Step 6: Final answer
   x = 49,894.43