Finding the Fourth Proportional to 138,241.83, 190,804.83 and 90,467.49

Step by Step Solution

1. Step 1: Write the proportion equation
   138,241.83 : 190,804.83 = 90,467.49 : x
2. Step 2: Convert to fraction form
   138,241.83/190,804.83 = 90,467.49/x
3. Step 3: Cross multiply
   138,241.83x = 190,804.83 × 90,467.49
4. Step 4: Simplify right side
   138,241.83x = 17,261,634,049.98
5. Step 5: Solve for x
   x = 17,261,634,049.98/138,241.83
6. Step 6: Final answer
   x = 124,865.49