Finding the Fourth Proportional to 129,991.72, 195,016.72 and 41,248.12

Step by Step Solution

1. Step 1: Write the proportion equation
   129,991.72 : 195,016.72 = 41,248.12 : x
2. Step 2: Convert to fraction form
   129,991.72/195,016.72 = 41,248.12/x
3. Step 3: Cross multiply
   129,991.72x = 195,016.72 × 41,248.12
4. Step 4: Simplify right side
   129,991.72x = 8,044,073,068.57
5. Step 5: Solve for x
   x = 8,044,073,068.57/129,991.72
6. Step 6: Final answer
   x = 61,881.43