Finding the Fourth Proportional to 139,963.95, 209,626.38 and 109,909.71

Step by Step Solution

1. Step 1: Write the proportion equation
   139,963.95 : 209,626.38 = 109,909.71 : x
2. Step 2: Convert to fraction form
   139,963.95/209,626.38 = 109,909.71/x
3. Step 3: Cross multiply
   139,963.95x = 209,626.38 × 109,909.71
4. Step 4: Simplify right side
   139,963.95x = 23,039,974,634.15
5. Step 5: Solve for x
   x = 23,039,974,634.15/139,963.95
6. Step 6: Final answer
   x = 164,613.64