Finding the Fourth Proportional to 139,996.49, 193,188.17 and 79,559.15

Step by Step Solution

1. Step 1: Write the proportion equation
   139,996.49 : 193,188.17 = 79,559.15 : x
2. Step 2: Convert to fraction form
   139,996.49/193,188.17 = 79,559.15/x
3. Step 3: Cross multiply
   139,996.49x = 193,188.17 × 79,559.15
4. Step 4: Simplify right side
   139,996.49x = 15,369,885,828.21
5. Step 5: Solve for x
   x = 15,369,885,828.21/139,996.49
6. Step 6: Final answer
   x = 109,787.66