Finding the Fourth Proportional to 64,732.25, 89,317.72 and 40,891.61

Step by Step Solution

1. Step 1: Write the proportion equation
   64,732.25 : 89,317.72 = 40,891.61 : x
2. Step 2: Convert to fraction form
   64,732.25/89,317.72 = 40,891.61/x
3. Step 3: Cross multiply
   64,732.25x = 89,317.72 × 40,891.61
4. Step 4: Simplify right side
   64,732.25x = 3,652,345,493.39
5. Step 5: Solve for x
   x = 3,652,345,493.39/64,732.25
6. Step 6: Final answer
   x = 56,422.35