Finding the Fourth Proportional to 65,171.35, 89,890.08 and 59,811.10

Step by Step Solution

1. Step 1: Write the proportion equation
   65,171.35 : 89,890.08 = 59,811.10 : x
2. Step 2: Convert to fraction form
   65,171.35/89,890.08 = 59,811.10/x
3. Step 3: Cross multiply
   65,171.35x = 89,890.08 × 59,811.10
4. Step 4: Simplify right side
   65,171.35x = 5,376,424,488.69
5. Step 5: Solve for x
   x = 5,376,424,488.69/65,171.35
6. Step 6: Final answer
   x = 82,496.75