Finding the Fourth Proportional to 145,196.88, 200,284.82 and 91,388.48

Step by Step Solution

1. Step 1: Write the proportion equation
   145,196.88 : 200,284.82 = 91,388.48 : x
2. Step 2: Convert to fraction form
   145,196.88/200,284.82 = 91,388.48/x
3. Step 3: Cross multiply
   145,196.88x = 200,284.82 × 91,388.48
4. Step 4: Simplify right side
   145,196.88x = 18,303,723,808.51
5. Step 5: Solve for x
   x = 18,303,723,808.51/145,196.88
6. Step 6: Final answer
   x = 126,061.42