Finding the Fourth Proportional to 158,131.78, 218,227.03 and 90,147.53

Step by Step Solution

1. Step 1: Write the proportion equation
   158,131.78 : 218,227.03 = 90,147.53 : x
2. Step 2: Convert to fraction form
   158,131.78/218,227.03 = 90,147.53/x
3. Step 3: Cross multiply
   158,131.78x = 218,227.03 × 90,147.53
4. Step 4: Simplify right side
   158,131.78x = 19,672,628,053.93
5. Step 5: Solve for x
   x = 19,672,628,053.93/158,131.78
6. Step 6: Final answer
   x = 124,406.54