Finding the Fourth Proportional to 103,631.50, 143,016.72 and 61,189.12

Step by Step Solution

1. Step 1: Write the proportion equation
   103,631.50 : 143,016.72 = 61,189.12 : x
2. Step 2: Convert to fraction form
   103,631.50/143,016.72 = 61,189.12/x
3. Step 3: Cross multiply
   103,631.50x = 143,016.72 × 61,189.12
4. Step 4: Simplify right side
   103,631.50x = 8,751,067,242.09
5. Step 5: Solve for x
   x = 8,751,067,242.09/103,631.50
6. Step 6: Final answer
   x = 84,444.09