Finding the Fourth Proportional to 99,016.40, 136,606.73 and 65,043.18

Step by Step Solution

1. Step 1: Write the proportion equation
   99,016.40 : 136,606.73 = 65,043.18 : x
2. Step 2: Convert to fraction form
   99,016.40/136,606.73 = 65,043.18/x
3. Step 3: Cross multiply
   99,016.40x = 136,606.73 × 65,043.18
4. Step 4: Simplify right side
   99,016.40x = 8,885,335,445.57
5. Step 5: Solve for x
   x = 8,885,335,445.57/99,016.40
6. Step 6: Final answer
   x = 89,736.00