Finding the Fourth Proportional to 144,109.58, 198,874.56 and 90,396.86

Step by Step Solution

1. Step 1: Write the proportion equation
   144,109.58 : 198,874.56 = 90,396.86 : x
2. Step 2: Convert to fraction form
   144,109.58/198,874.56 = 90,396.86/x
3. Step 3: Cross multiply
   144,109.58x = 198,874.56 × 90,396.86
4. Step 4: Simplify right side
   144,109.58x = 17,977,635,757.88
5. Step 5: Solve for x
   x = 17,977,635,757.88/144,109.58
6. Step 6: Final answer
   x = 124,749.76