Finding the Fourth Proportional to 65,086.41, 89,658.71 and 55,495.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,086.41 : 89,658.71 = 55,495.05 : x
2. Step 2: Convert to fraction form
   65,086.41/89,658.71 = 55,495.05/x
3. Step 3: Cross multiply
   65,086.41x = 89,658.71 × 55,495.05
4. Step 4: Simplify right side
   65,086.41x = 4,975,614,541.06
5. Step 5: Solve for x
   x = 4,975,614,541.06/65,086.41
6. Step 6: Final answer
   x = 76,446.29