Finding the Fourth Proportional to 144,012.28, 198,727.50 and 90,295

Step by Step Solution

1. Step 1: Write the proportion equation
   144,012.28 : 198,727.50 = 90,295 : x
2. Step 2: Convert to fraction form
   144,012.28/198,727.50 = 90,295/x
3. Step 3: Cross multiply
   144,012.28x = 198,727.50 × 90,295
4. Step 4: Simplify right side
   144,012.28x = 17,944,099,612.50
5. Step 5: Solve for x
   x = 17,944,099,612.50/144,012.28
6. Step 6: Final answer
   x = 124,601.18