Finding the Fourth Proportional to 64,664.94, 89,187.04 and 42,011.22

Step by Step Solution

1. Step 1: Write the proportion equation
   64,664.94 : 89,187.04 = 42,011.22 : x
2. Step 2: Convert to fraction form
   64,664.94/89,187.04 = 42,011.22/x
3. Step 3: Cross multiply
   64,664.94x = 89,187.04 × 42,011.22
4. Step 4: Simplify right side
   64,664.94x = 3,746,856,358.59
5. Step 5: Solve for x
   x = 3,746,856,358.59/64,664.94
6. Step 6: Final answer
   x = 57,942.62