Finding the Fourth Proportional to 82,907.62, 124,398.15 and 43,455.31

Step by Step Solution

1. Step 1: Write the proportion equation
   82,907.62 : 124,398.15 = 43,455.31 : x
2. Step 2: Convert to fraction form
   82,907.62/124,398.15 = 43,455.31/x
3. Step 3: Cross multiply
   82,907.62x = 124,398.15 × 43,455.31
4. Step 4: Simplify right side
   82,907.62x = 5,405,760,171.68
5. Step 5: Solve for x
   x = 5,405,760,171.68/82,907.62
6. Step 6: Final answer
   x = 65,202.21