Finding the Fourth Proportional to 108,139.16, 162,243.52 and 51,983.36

Step by Step Solution

1. Step 1: Write the proportion equation
   108,139.16 : 162,243.52 = 51,983.36 : x
2. Step 2: Convert to fraction form
   108,139.16/162,243.52 = 51,983.36/x
3. Step 3: Cross multiply
   108,139.16x = 162,243.52 × 51,983.36
4. Step 4: Simplify right side
   108,139.16x = 8,433,963,307.83
5. Step 5: Solve for x
   x = 8,433,963,307.83/108,139.16
6. Step 6: Final answer
   x = 77,991.76