Finding the Fourth Proportional to 144,109.56, 198,874.56 and 90,396.84

Step by Step Solution

1. Step 1: Write the proportion equation
   144,109.56 : 198,874.56 = 90,396.84 : x
2. Step 2: Convert to fraction form
   144,109.56/198,874.56 = 90,396.84/x
3. Step 3: Cross multiply
   144,109.56x = 198,874.56 × 90,396.84
4. Step 4: Simplify right side
   144,109.56x = 17,977,631,780.39
5. Step 5: Solve for x
   x = 17,977,631,780.39/144,109.56
6. Step 6: Final answer
   x = 124,749.75