Finding the Fourth Proportional to 142,228.84, 196,128.48 and 122,152.12

Step by Step Solution

1. Step 1: Write the proportion equation
   142,228.84 : 196,128.48 = 122,152.12 : x
2. Step 2: Convert to fraction form
   142,228.84/196,128.48 = 122,152.12/x
3. Step 3: Cross multiply
   142,228.84x = 196,128.48 × 122,152.12
4. Step 4: Simplify right side
   142,228.84x = 23,957,509,624.38
5. Step 5: Solve for x
   x = 23,957,509,624.38/142,228.84
6. Step 6: Final answer
   x = 168,443.40