Finding the Fourth Proportional to 139,547.09, 192,569.18 and 79,121.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,547.09 : 192,569.18 = 79,121.82 : x
2. Step 2: Convert to fraction form
   139,547.09/192,569.18 = 79,121.82/x
3. Step 3: Cross multiply
   139,547.09x = 192,569.18 × 79,121.82
4. Step 4: Simplify right side
   139,547.09x = 15,236,423,601.90
5. Step 5: Solve for x
   x = 15,236,423,601.90/139,547.09
6. Step 6: Final answer
   x = 109,184.82