Finding the Fourth Proportional to 139,945.91, 193,118.06 and 79,508.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,945.91 : 193,118.06 = 79,508.16 : x
2. Step 2: Convert to fraction form
   139,945.91/193,118.06 = 79,508.16/x
3. Step 3: Cross multiply
   139,945.91x = 193,118.06 × 79,508.16
4. Step 4: Simplify right side
   139,945.91x = 15,354,461,215.83
5. Step 5: Solve for x
   x = 15,354,461,215.83/139,945.91
6. Step 6: Final answer
   x = 109,717.12