Finding the Fourth Proportional to 85,776.98, 128,661.35 and 23,447.62

Step by Step Solution

1. Step 1: Write the proportion equation
   85,776.98 : 128,661.35 = 23,447.62 : x
2. Step 2: Convert to fraction form
   85,776.98/128,661.35 = 23,447.62/x
3. Step 3: Cross multiply
   85,776.98x = 128,661.35 × 23,447.62
4. Step 4: Simplify right side
   85,776.98x = 3,016,802,443.49
5. Step 5: Solve for x
   x = 3,016,802,443.49/85,776.98
6. Step 6: Final answer
   x = 35,170.30