Finding the Fourth Proportional to 83,642.36, 115,480.50 and 51,845

Step by Step Solution

1. Step 1: Write the proportion equation
   83,642.36 : 115,480.50 = 51,845 : x
2. Step 2: Convert to fraction form
   83,642.36/115,480.50 = 51,845/x
3. Step 3: Cross multiply
   83,642.36x = 115,480.50 × 51,845
4. Step 4: Simplify right side
   83,642.36x = 5,987,086,522.50
5. Step 5: Solve for x
   x = 5,987,086,522.50/83,642.36
6. Step 6: Final answer
   x = 71,579.60