Finding the Fourth Proportional to 139,485.47, 192,569.06 and 106,718.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,485.47 : 192,569.06 = 106,718.29 : x
2. Step 2: Convert to fraction form
   139,485.47/192,569.06 = 106,718.29/x
3. Step 3: Cross multiply
   139,485.47x = 192,569.06 × 106,718.29
4. Step 4: Simplify right side
   139,485.47x = 20,550,640,575.48
5. Step 5: Solve for x
   x = 20,550,640,575.48/139,485.47
6. Step 6: Final answer
   x = 147,331.77