Finding the Fourth Proportional to 139,476.72, 192,634.68 and 108,026.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,476.72 : 192,634.68 = 108,026.16 : x
2. Step 2: Convert to fraction form
   139,476.72/192,634.68 = 108,026.16/x
3. Step 3: Cross multiply
   139,476.72x = 192,634.68 × 108,026.16
4. Step 4: Simplify right side
   139,476.72x = 20,809,584,763.23
5. Step 5: Solve for x
   x = 20,809,584,763.23/139,476.72
6. Step 6: Final answer
   x = 149,197.55