Finding the Fourth Proportional to 139,730.49, 192,828 and 76,068.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,730.49 : 192,828 = 76,068.27 : x
2. Step 2: Convert to fraction form
   139,730.49/192,828 = 76,068.27/x
3. Step 3: Cross multiply
   139,730.49x = 192,828 × 76,068.27
4. Step 4: Simplify right side
   139,730.49x = 14,668,092,367.56
5. Step 5: Solve for x
   x = 14,668,092,367.56/139,730.49
6. Step 6: Final answer
   x = 104,974.17