Finding the Fourth Proportional to 142,056.38, 212,826.15 and 82,712.14

Step by Step Solution

1. Step 1: Write the proportion equation
   142,056.38 : 212,826.15 = 82,712.14 : x
2. Step 2: Convert to fraction form
   142,056.38/212,826.15 = 82,712.14/x
3. Step 3: Cross multiply
   142,056.38x = 212,826.15 × 82,712.14
4. Step 4: Simplify right side
   142,056.38x = 17,603,306,314.46
5. Step 5: Solve for x
   x = 17,603,306,314.46/142,056.38
6. Step 6: Final answer
   x = 123,917.75