Finding the Fourth Proportional to 67,871.91, 93,667.67 and 39,192.78

Step by Step Solution

1. Step 1: Write the proportion equation
   67,871.91 : 93,667.67 = 39,192.78 : x
2. Step 2: Convert to fraction form
   67,871.91/93,667.67 = 39,192.78/x
3. Step 3: Cross multiply
   67,871.91x = 93,667.67 × 39,192.78
4. Step 4: Simplify right side
   67,871.91x = 3,671,096,383.42
5. Step 5: Solve for x
   x = 3,671,096,383.42/67,871.91
6. Step 6: Final answer
   x = 54,088.60