Finding the Fourth Proportional to 151,825.18, 209,606.20 and 100,906.96

Step by Step Solution

1. Step 1: Write the proportion equation
   151,825.18 : 209,606.20 = 100,906.96 : x
2. Step 2: Convert to fraction form
   151,825.18/209,606.20 = 100,906.96/x
3. Step 3: Cross multiply
   151,825.18x = 209,606.20 × 100,906.96
4. Step 4: Simplify right side
   151,825.18x = 21,150,722,886.59
5. Step 5: Solve for x
   x = 21,150,722,886.59/151,825.18
6. Step 6: Final answer
   x = 139,309.72