Finding the Fourth Proportional to 123,940.56, 171,052.56 and 73,639.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,940.56 : 171,052.56 = 73,639.60 : x
2. Step 2: Convert to fraction form
   123,940.56/171,052.56 = 73,639.60/x
3. Step 3: Cross multiply
   123,940.56x = 171,052.56 × 73,639.60
4. Step 4: Simplify right side
   123,940.56x = 12,596,242,097.38
5. Step 5: Solve for x
   x = 12,596,242,097.38/123,940.56
6. Step 6: Final answer
   x = 101,631.32