Finding the Fourth Proportional to 143,590.05, 198,150.98 and 89,904.66

Step by Step Solution

1. Step 1: Write the proportion equation
   143,590.05 : 198,150.98 = 89,904.66 : x
2. Step 2: Convert to fraction form
   143,590.05/198,150.98 = 89,904.66/x
3. Step 3: Cross multiply
   143,590.05x = 198,150.98 × 89,904.66
4. Step 4: Simplify right side
   143,590.05x = 17,814,697,116.25
5. Step 5: Solve for x
   x = 17,814,697,116.25/143,590.05
6. Step 6: Final answer
   x = 124,066.38