Finding the Fourth Proportional to 139,012.08, 208,582.92 and 82,849.92

Step by Step Solution

1. Step 1: Write the proportion equation
   139,012.08 : 208,582.92 = 82,849.92 : x
2. Step 2: Convert to fraction form
   139,012.08/208,582.92 = 82,849.92/x
3. Step 3: Cross multiply
   139,012.08x = 208,582.92 × 82,849.92
4. Step 4: Simplify right side
   139,012.08x = 17,281,078,235.37
5. Step 5: Solve for x
   x = 17,281,078,235.37/139,012.08
6. Step 6: Final answer
   x = 124,313.50