Finding the Fourth Proportional to 139,054.73, 208,504.33 and 55,929.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,054.73 : 208,504.33 = 55,929.29 : x
2. Step 2: Convert to fraction form
   139,054.73/208,504.33 = 55,929.29/x
3. Step 3: Cross multiply
   139,054.73x = 208,504.33 × 55,929.29
4. Step 4: Simplify right side
   139,054.73x = 11,661,497,956.48
5. Step 5: Solve for x
   x = 11,661,497,956.48/139,054.73
6. Step 6: Final answer
   x = 83,862.65