Finding the Fourth Proportional to 83,610.36, 115,436.34 and 51,813

Step by Step Solution

1. Step 1: Write the proportion equation
   83,610.36 : 115,436.34 = 51,813 : x
2. Step 2: Convert to fraction form
   83,610.36/115,436.34 = 51,813/x
3. Step 3: Cross multiply
   83,610.36x = 115,436.34 × 51,813
4. Step 4: Simplify right side
   83,610.36x = 5,981,103,084.42
5. Step 5: Solve for x
   x = 5,981,103,084.42/83,610.36
6. Step 6: Final answer
   x = 71,535.43