Finding the Fourth Proportional to 139,262.77, 208,963.20 and 55,083.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,262.77 : 208,963.20 = 55,083.34 : x
2. Step 2: Convert to fraction form
   139,262.77/208,963.20 = 55,083.34/x
3. Step 3: Cross multiply
   139,262.77x = 208,963.20 × 55,083.34
4. Step 4: Simplify right side
   139,262.77x = 11,510,390,993.09
5. Step 5: Solve for x
   x = 11,510,390,993.09/139,262.77
6. Step 6: Final answer
   x = 82,652.32