Finding the Fourth Proportional to 139,462.52, 209,204.58 and 83,682.68

Step by Step Solution

1. Step 1: Write the proportion equation
   139,462.52 : 209,204.58 = 83,682.68 : x
2. Step 2: Convert to fraction form
   139,462.52/209,204.58 = 83,682.68/x
3. Step 3: Cross multiply
   139,462.52x = 209,204.58 × 83,682.68
4. Step 4: Simplify right side
   139,462.52x = 17,506,799,922.67
5. Step 5: Solve for x
   x = 17,506,799,922.67/139,462.52
6. Step 6: Final answer
   x = 125,530.50