Finding the Fourth Proportional to 139,038.30, 208,555.63 and 33,857.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,038.30 : 208,555.63 = 33,857.37 : x
2. Step 2: Convert to fraction form
   139,038.30/208,555.63 = 33,857.37/x
3. Step 3: Cross multiply
   139,038.30x = 208,555.63 × 33,857.37
4. Step 4: Simplify right side
   139,038.30x = 7,061,145,045.85
5. Step 5: Solve for x
   x = 7,061,145,045.85/139,038.30
6. Step 6: Final answer
   x = 50,785.61