Finding the Fourth Proportional to 139,059.09, 206,799.57 and 134,630.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,059.09 : 206,799.57 = 134,630.37 : x
2. Step 2: Convert to fraction form
   139,059.09/206,799.57 = 134,630.37/x
3. Step 3: Cross multiply
   139,059.09x = 206,799.57 × 134,630.37
4. Step 4: Simplify right side
   139,059.09x = 27,841,502,624.94
5. Step 5: Solve for x
   x = 27,841,502,624.94/139,059.09
6. Step 6: Final answer
   x = 200,213.47