Finding the Fourth Proportional to 144,570, 199,629.72 and 90,944.76

Step by Step Solution

1. Step 1: Write the proportion equation
   144,570 : 199,629.72 = 90,944.76 : x
2. Step 2: Convert to fraction form
   144,570/199,629.72 = 90,944.76/x
3. Step 3: Cross multiply
   144,570x = 199,629.72 × 90,944.76
4. Step 4: Simplify right side
   144,570x = 18,155,276,974.27
5. Step 5: Solve for x
   x = 18,155,276,974.27/144,570
6. Step 6: Final answer
   x = 125,581.22