Finding the Fourth Proportional to 142,990.88, 214,522.32 and 83,876

Step by Step Solution

1. Step 1: Write the proportion equation
   142,990.88 : 214,522.32 = 83,876 : x
2. Step 2: Convert to fraction form
   142,990.88/214,522.32 = 83,876/x
3. Step 3: Cross multiply
   142,990.88x = 214,522.32 × 83,876
4. Step 4: Simplify right side
   142,990.88x = 17,993,274,112.32
5. Step 5: Solve for x
   x = 17,993,274,112.32/142,990.88
6. Step 6: Final answer
   x = 125,835.12