Finding the Fourth Proportional to 139,485.80, 209,026.76 and 96,164.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,485.80 : 209,026.76 = 96,164.27 : x
2. Step 2: Convert to fraction form
   139,485.80/209,026.76 = 96,164.27/x
3. Step 3: Cross multiply
   139,485.80x = 209,026.76 × 96,164.27
4. Step 4: Simplify right side
   139,485.80x = 20,100,905,785.87
5. Step 5: Solve for x
   x = 20,100,905,785.87/139,485.80
6. Step 6: Final answer
   x = 144,107.18