Finding the Fourth Proportional to 139,917.33, 193,086.57 and 79,491.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,917.33 : 193,086.57 = 79,491.29 : x
2. Step 2: Convert to fraction form
   139,917.33/193,086.57 = 79,491.29/x
3. Step 3: Cross multiply
   139,917.33x = 193,086.57 × 79,491.29
4. Step 4: Simplify right side
   139,917.33x = 15,348,699,565.54
5. Step 5: Solve for x
   x = 15,348,699,565.54/139,917.33
6. Step 6: Final answer
   x = 109,698.35