Finding the Fourth Proportional to 139,969.51, 209,954.16 and 34,788.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,969.51 : 209,954.16 = 34,788.48 : x
2. Step 2: Convert to fraction form
   139,969.51/209,954.16 = 34,788.48/x
3. Step 3: Cross multiply
   139,969.51x = 209,954.16 × 34,788.48
4. Step 4: Simplify right side
   139,969.51x = 7,303,986,096.08
5. Step 5: Solve for x
   x = 7,303,986,096.08/139,969.51
6. Step 6: Final answer
   x = 52,182.69