Finding the Fourth Proportional to 139,727.07, 192,827.61 and 98,964.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,727.07 : 192,827.61 = 98,964.27 : x
2. Step 2: Convert to fraction form
   139,727.07/192,827.61 = 98,964.27/x
3. Step 3: Cross multiply
   139,727.07x = 192,827.61 × 98,964.27
4. Step 4: Simplify right side
   139,727.07x = 19,083,043,659.49
5. Step 5: Solve for x
   x = 19,083,043,659.49/139,727.07
6. Step 6: Final answer
   x = 136,573.71