Finding the Fourth Proportional to 139,397.28, 209,097 and 34,217.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,397.28 : 209,097 = 34,217.16 : x
2. Step 2: Convert to fraction form
   139,397.28/209,097 = 34,217.16/x
3. Step 3: Cross multiply
   139,397.28x = 209,097 × 34,217.16
4. Step 4: Simplify right side
   139,397.28x = 7,154,705,504.52
5. Step 5: Solve for x
   x = 7,154,705,504.52/139,397.28
6. Step 6: Final answer
   x = 51,326.01