Finding the Fourth Proportional to 139,665.48, 192,734.50 and 76,001.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,665.48 : 192,734.50 = 76,001.80 : x
2. Step 2: Convert to fraction form
   139,665.48/192,734.50 = 76,001.80/x
3. Step 3: Cross multiply
   139,665.48x = 192,734.50 × 76,001.80
4. Step 4: Simplify right side
   139,665.48x = 14,648,168,922.10
5. Step 5: Solve for x
   x = 14,648,168,922.10/139,665.48
6. Step 6: Final answer
   x = 104,880.38