Finding the Fourth Proportional to 108,072.43, 149,142.47 and 67,787.89

Step by Step Solution

1. Step 1: Write the proportion equation
   108,072.43 : 149,142.47 = 67,787.89 : x
2. Step 2: Convert to fraction form
   108,072.43/149,142.47 = 67,787.89/x
3. Step 3: Cross multiply
   108,072.43x = 149,142.47 × 67,787.89
4. Step 4: Simplify right side
   108,072.43x = 10,110,052,638.89
5. Step 5: Solve for x
   x = 10,110,052,638.89/108,072.43
6. Step 6: Final answer
   x = 93,548.86