Finding the Fourth Proportional to 143,611, 198,187.74 and 89,878.84

Step by Step Solution

1. Step 1: Write the proportion equation
   143,611 : 198,187.74 = 89,878.84 : x
2. Step 2: Convert to fraction form
   143,611/198,187.74 = 89,878.84/x
3. Step 3: Cross multiply
   143,611x = 198,187.74 × 89,878.84
4. Step 4: Simplify right side
   143,611x = 17,812,884,173.42
5. Step 5: Solve for x
   x = 17,812,884,173.42/143,611
6. Step 6: Final answer
   x = 124,035.65