Finding the Fourth Proportional to 139,465.62, 209,196.57 and 34,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,465.62 : 209,196.57 = 34,285.50 : x
2. Step 2: Convert to fraction form
   139,465.62/209,196.57 = 34,285.50/x
3. Step 3: Cross multiply
   139,465.62x = 209,196.57 × 34,285.50
4. Step 4: Simplify right side
   139,465.62x = 7,172,409,000.74
5. Step 5: Solve for x
   x = 7,172,409,000.74/139,465.62
6. Step 6: Final answer
   x = 51,427.79