Finding the Fourth Proportional to 139,922.07, 193,086.81 and 76,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,922.07 : 193,086.81 = 76,258.50 : x
2. Step 2: Convert to fraction form
   139,922.07/193,086.81 = 76,258.50/x
3. Step 3: Cross multiply
   139,922.07x = 193,086.81 × 76,258.50
4. Step 4: Simplify right side
   139,922.07x = 14,724,510,500.39
5. Step 5: Solve for x
   x = 14,724,510,500.39/139,922.07
6. Step 6: Final answer
   x = 105,233.65