Finding the Fourth Proportional to 139,541.31, 209,314.34 and 39,704.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,541.31 : 209,314.34 = 39,704.14 : x
2. Step 2: Convert to fraction form
   139,541.31/209,314.34 = 39,704.14/x
3. Step 3: Cross multiply
   139,541.31x = 209,314.34 × 39,704.14
4. Step 4: Simplify right side
   139,541.31x = 8,310,645,859.37
5. Step 5: Solve for x
   x = 8,310,645,859.37/139,541.31
6. Step 6: Final answer
   x = 59,556.89