Finding the Fourth Proportional to 82,218.36, 123,128.82 and 47,051.40

Step by Step Solution

1. Step 1: Write the proportion equation
   82,218.36 : 123,128.82 = 47,051.40 : x
2. Step 2: Convert to fraction form
   82,218.36/123,128.82 = 47,051.40/x
3. Step 3: Cross multiply
   82,218.36x = 123,128.82 × 47,051.40
4. Step 4: Simplify right side
   82,218.36x = 5,793,383,361.35
5. Step 5: Solve for x
   x = 5,793,383,361.35/82,218.36
6. Step 6: Final answer
   x = 70,463.38