Finding the Fourth Proportional to 93,871.37, 139,969.69 and 83,439.38

Step by Step Solution

1. Step 1: Write the proportion equation
   93,871.37 : 139,969.69 = 83,439.38 : x
2. Step 2: Convert to fraction form
   93,871.37/139,969.69 = 83,439.38/x
3. Step 3: Cross multiply
   93,871.37x = 139,969.69 × 83,439.38
4. Step 4: Simplify right side
   93,871.37x = 11,678,984,293.72
5. Step 5: Solve for x
   x = 11,678,984,293.72/93,871.37
6. Step 6: Final answer
   x = 124,414.76