Finding the Fourth Proportional to 139,935.96, 209,949.30 and 83,767.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,935.96 : 209,949.30 = 83,767.32 : x
2. Step 2: Convert to fraction form
   139,935.96/209,949.30 = 83,767.32/x
3. Step 3: Cross multiply
   139,935.96x = 209,949.30 × 83,767.32
4. Step 4: Simplify right side
   139,935.96x = 17,586,890,196.88
5. Step 5: Solve for x
   x = 17,586,890,196.88/139,935.96
6. Step 6: Final answer
   x = 125,678.13