Finding the Fourth Proportional to 139,900.48, 193,056.66 and 79,470.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,900.48 : 193,056.66 = 79,470.94 : x
2. Step 2: Convert to fraction form
   139,900.48/193,056.66 = 79,470.94/x
3. Step 3: Cross multiply
   139,900.48x = 193,056.66 × 79,470.94
4. Step 4: Simplify right side
   139,900.48x = 15,342,394,243.46
5. Step 5: Solve for x
   x = 15,342,394,243.46/139,900.48
6. Step 6: Final answer
   x = 109,666.49