Finding the Fourth Proportional to 141,189.21, 195,014.81 and 105,538.38

Step by Step Solution

1. Step 1: Write the proportion equation
   141,189.21 : 195,014.81 = 105,538.38 : x
2. Step 2: Convert to fraction form
   141,189.21/195,014.81 = 105,538.38/x
3. Step 3: Cross multiply
   141,189.21x = 195,014.81 × 105,538.38
4. Step 4: Simplify right side
   141,189.21x = 20,581,546,595.72
5. Step 5: Solve for x
   x = 20,581,546,595.72/141,189.21
6. Step 6: Final answer
   x = 145,772.80