Finding the Fourth Proportional to 64,388.43, 88,855.72 and 40,546.49

Step by Step Solution

1. Step 1: Write the proportion equation
   64,388.43 : 88,855.72 = 40,546.49 : x
2. Step 2: Convert to fraction form
   64,388.43/88,855.72 = 40,546.49/x
3. Step 3: Cross multiply
   64,388.43x = 88,855.72 × 40,546.49
4. Step 4: Simplify right side
   64,388.43x = 3,602,787,016.78
5. Step 5: Solve for x
   x = 3,602,787,016.78/64,388.43
6. Step 6: Final answer
   x = 55,953.95