Finding the Fourth Proportional to 139,160.88, 192,042.06 and 78,730.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,160.88 : 192,042.06 = 78,730.29 : x
2. Step 2: Convert to fraction form
   139,160.88/192,042.06 = 78,730.29/x
3. Step 3: Cross multiply
   139,160.88x = 192,042.06 × 78,730.29
4. Step 4: Simplify right side
   139,160.88x = 15,119,527,076.00
5. Step 5: Solve for x
   x = 15,119,527,076.00/139,160.88
6. Step 6: Final answer
   x = 108,647.83