Finding the Fourth Proportional to 47,066.35, 64,918.78 and 39,943.72

Step by Step Solution

1. Step 1: Write the proportion equation
   47,066.35 : 64,918.78 = 39,943.72 : x
2. Step 2: Convert to fraction form
   47,066.35/64,918.78 = 39,943.72/x
3. Step 3: Cross multiply
   47,066.35x = 64,918.78 × 39,943.72
4. Step 4: Simplify right side
   47,066.35x = 2,593,097,571.06
5. Step 5: Solve for x
   x = 2,593,097,571.06/47,066.35
6. Step 6: Final answer
   x = 55,094.51