Finding the Fourth Proportional to 86,852.72, 119,861.16 and 49,139.12

Step by Step Solution

1. Step 1: Write the proportion equation
   86,852.72 : 119,861.16 = 49,139.12 : x
2. Step 2: Convert to fraction form
   86,852.72/119,861.16 = 49,139.12/x
3. Step 3: Cross multiply
   86,852.72x = 119,861.16 × 49,139.12
4. Step 4: Simplify right side
   86,852.72x = 5,889,871,924.58
5. Step 5: Solve for x
   x = 5,889,871,924.58/86,852.72
6. Step 6: Final answer
   x = 67,814.48