Finding the Fourth Proportional to 143,871, 198,460.56 and 90,062.56

Step by Step Solution

1. Step 1: Write the proportion equation
   143,871 : 198,460.56 = 90,062.56 : x
2. Step 2: Convert to fraction form
   143,871/198,460.56 = 90,062.56/x
3. Step 3: Cross multiply
   143,871x = 198,460.56 × 90,062.56
4. Step 4: Simplify right side
   143,871x = 17,873,866,092.63
5. Step 5: Solve for x
   x = 17,873,866,092.63/143,871
6. Step 6: Final answer
   x = 124,235.36