Finding the Fourth Proportional to 143,871.50, 198,568.32 and 90,202.52

Step by Step Solution

1. Step 1: Write the proportion equation
   143,871.50 : 198,568.32 = 90,202.52 : x
2. Step 2: Convert to fraction form
   143,871.50/198,568.32 = 90,202.52/x
3. Step 3: Cross multiply
   143,871.50x = 198,568.32 × 90,202.52
4. Step 4: Simplify right side
   143,871.50x = 17,911,362,856.17
5. Step 5: Solve for x
   x = 17,911,362,856.17/143,871.50
6. Step 6: Final answer
   x = 124,495.56