Finding the Fourth Proportional to 65,160.36, 89,842.48 and 55,071

Step by Step Solution

1. Step 1: Write the proportion equation
   65,160.36 : 89,842.48 = 55,071 : x
2. Step 2: Convert to fraction form
   65,160.36/89,842.48 = 55,071/x
3. Step 3: Cross multiply
   65,160.36x = 89,842.48 × 55,071
4. Step 4: Simplify right side
   65,160.36x = 4,947,715,216.08
5. Step 5: Solve for x
   x = 4,947,715,216.08/65,160.36
6. Step 6: Final answer
   x = 75,931.37