Finding the Fourth Proportional to 139,735.47, 209,340.77 and 108,417.63

Step by Step Solution

1. Step 1: Write the proportion equation
   139,735.47 : 209,340.77 = 108,417.63 : x
2. Step 2: Convert to fraction form
   139,735.47/209,340.77 = 108,417.63/x
3. Step 3: Cross multiply
   139,735.47x = 209,340.77 × 108,417.63
4. Step 4: Simplify right side
   139,735.47x = 22,696,229,603.69
5. Step 5: Solve for x
   x = 22,696,229,603.69/139,735.47
6. Step 6: Final answer
   x = 162,422.82