Finding the Fourth Proportional to 139,924.47, 193,099.82 and 76,266.39

Step by Step Solution

1. Step 1: Write the proportion equation
   139,924.47 : 193,099.82 = 76,266.39 : x
2. Step 2: Convert to fraction form
   139,924.47/193,099.82 = 76,266.39/x
3. Step 3: Cross multiply
   139,924.47x = 193,099.82 × 76,266.39
4. Step 4: Simplify right side
   139,924.47x = 14,727,025,799.72
5. Step 5: Solve for x
   x = 14,727,025,799.72/139,924.47
6. Step 6: Final answer
   x = 105,249.82