Finding the Fourth Proportional to 89,683, 123,762.54 and 51,979.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,683 : 123,762.54 = 51,979.12 : x
2. Step 2: Convert to fraction form
   89,683/123,762.54 = 51,979.12/x
3. Step 3: Cross multiply
   89,683x = 123,762.54 × 51,979.12
4. Step 4: Simplify right side
   89,683x = 6,433,067,918.16
5. Step 5: Solve for x
   x = 6,433,067,918.16/89,683
6. Step 6: Final answer
   x = 71,731.19