Finding the Fourth Proportional to 154,696.86, 213,405.72 and 100,957.02

Step by Step Solution

1. Step 1: Write the proportion equation
   154,696.86 : 213,405.72 = 100,957.02 : x
2. Step 2: Convert to fraction form
   154,696.86/213,405.72 = 100,957.02/x
3. Step 3: Cross multiply
   154,696.86x = 213,405.72 × 100,957.02
4. Step 4: Simplify right side
   154,696.86x = 21,544,805,542.15
5. Step 5: Solve for x
   x = 21,544,805,542.15/154,696.86
6. Step 6: Final answer
   x = 139,271.12