Finding the Fourth Proportional to 139,725.53, 192,821.27 and 76,063.31

Step by Step Solution

1. Step 1: Write the proportion equation
   139,725.53 : 192,821.27 = 76,063.31 : x
2. Step 2: Convert to fraction form
   139,725.53/192,821.27 = 76,063.31/x
3. Step 3: Cross multiply
   139,725.53x = 192,821.27 × 76,063.31
4. Step 4: Simplify right side
   139,725.53x = 14,666,624,136.34
5. Step 5: Solve for x
   x = 14,666,624,136.34/139,725.53
6. Step 6: Final answer
   x = 104,967.39