Finding the Fourth Proportional to 123,258.42, 183,996 and 108,311.67

Step by Step Solution

1. Step 1: Write the proportion equation
   123,258.42 : 183,996 = 108,311.67 : x
2. Step 2: Convert to fraction form
   123,258.42/183,996 = 108,311.67/x
3. Step 3: Cross multiply
   123,258.42x = 183,996 × 108,311.67
4. Step 4: Simplify right side
   123,258.42x = 19,928,914,033.32
5. Step 5: Solve for x
   x = 19,928,914,033.32/123,258.42
6. Step 6: Final answer
   x = 161,684.00