Finding the Fourth Proportional to 139,506.69, 209,194.41 and 97,434.28

Step by Step Solution

1. Step 1: Write the proportion equation
   139,506.69 : 209,194.41 = 97,434.28 : x
2. Step 2: Convert to fraction form
   139,506.69/209,194.41 = 97,434.28/x
3. Step 3: Cross multiply
   139,506.69x = 209,194.41 × 97,434.28
4. Step 4: Simplify right side
   139,506.69x = 20,382,706,718.37
5. Step 5: Solve for x
   x = 20,382,706,718.37/139,506.69
6. Step 6: Final answer
   x = 146,105.59