Finding the Fourth Proportional to 158,142.72, 218,249.82 and 90,180.84

Step by Step Solution

1. Step 1: Write the proportion equation
   158,142.72 : 218,249.82 = 90,180.84 : x
2. Step 2: Convert to fraction form
   158,142.72/218,249.82 = 90,180.84/x
3. Step 3: Cross multiply
   158,142.72x = 218,249.82 × 90,180.84
4. Step 4: Simplify right side
   158,142.72x = 19,681,952,097.45
5. Step 5: Solve for x
   x = 19,681,952,097.45/158,142.72
6. Step 6: Final answer
   x = 124,456.90