Finding the Fourth Proportional to 139,960.76, 193,145.41 and 76,298.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,960.76 : 193,145.41 = 76,298.56 : x
2. Step 2: Convert to fraction form
   139,960.76/193,145.41 = 76,298.56/x
3. Step 3: Cross multiply
   139,960.76x = 193,145.41 × 76,298.56
4. Step 4: Simplify right side
   139,960.76x = 14,736,716,266.12
5. Step 5: Solve for x
   x = 14,736,716,266.12/139,960.76
6. Step 6: Final answer
   x = 105,291.77