Finding the Fourth Proportional to 65,071.36, 89,842.56 and 41,219.20

Step by Step Solution

1. Step 1: Write the proportion equation
   65,071.36 : 89,842.56 = 41,219.20 : x
2. Step 2: Convert to fraction form
   65,071.36/89,842.56 = 41,219.20/x
3. Step 3: Cross multiply
   65,071.36x = 89,842.56 × 41,219.20
4. Step 4: Simplify right side
   65,071.36x = 3,703,238,449.15
5. Step 5: Solve for x
   x = 3,703,238,449.15/65,071.36
6. Step 6: Final answer
   x = 56,910.42