Finding the Fourth Proportional to 108,021.42, 149,028 and 67,664.94

Step by Step Solution

1. Step 1: Write the proportion equation
   108,021.42 : 149,028 = 67,664.94 : x
2. Step 2: Convert to fraction form
   108,021.42/149,028 = 67,664.94/x
3. Step 3: Cross multiply
   108,021.42x = 149,028 × 67,664.94
4. Step 4: Simplify right side
   108,021.42x = 10,083,970,678.32
5. Step 5: Solve for x
   x = 10,083,970,678.32/108,021.42
6. Step 6: Final answer
   x = 93,351.58