Finding the Fourth Proportional to 139,429.68, 209,144.52 and 34,248.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,429.68 : 209,144.52 = 34,248.62 : x
2. Step 2: Convert to fraction form
   139,429.68/209,144.52 = 34,248.62/x
3. Step 3: Cross multiply
   139,429.68x = 209,144.52 × 34,248.62
4. Step 4: Simplify right side
   139,429.68x = 7,162,910,144.84
5. Step 5: Solve for x
   x = 7,162,910,144.84/139,429.68
6. Step 6: Final answer
   x = 51,372.92