Finding the Fourth Proportional to 45,665.10, 68,496.69 and 21,041.10

Step by Step Solution

1. Step 1: Write the proportion equation
   45,665.10 : 68,496.69 = 21,041.10 : x
2. Step 2: Convert to fraction form
   45,665.10/68,496.69 = 21,041.10/x
3. Step 3: Cross multiply
   45,665.10x = 68,496.69 × 21,041.10
4. Step 4: Simplify right side
   45,665.10x = 1,441,245,703.96
5. Step 5: Solve for x
   x = 1,441,245,703.96/45,665.10
6. Step 6: Final answer
   x = 31,561.21