Finding the Fourth Proportional to 139,362.54, 192,320.15 and 75,699.89

Step by Step Solution

1. Step 1: Write the proportion equation
   139,362.54 : 192,320.15 = 75,699.89 : x
2. Step 2: Convert to fraction form
   139,362.54/192,320.15 = 75,699.89/x
3. Step 3: Cross multiply
   139,362.54x = 192,320.15 × 75,699.89
4. Step 4: Simplify right side
   139,362.54x = 14,558,614,199.78
5. Step 5: Solve for x
   x = 14,558,614,199.78/139,362.54
6. Step 6: Final answer
   x = 104,465.76