Finding the Fourth Proportional to 66,729.96, 91,596.78 and 59,007.06

Step by Step Solution

1. Step 1: Write the proportion equation
   66,729.96 : 91,596.78 = 59,007.06 : x
2. Step 2: Convert to fraction form
   66,729.96/91,596.78 = 59,007.06/x
3. Step 3: Cross multiply
   66,729.96x = 91,596.78 × 59,007.06
4. Step 4: Simplify right side
   66,729.96x = 5,404,856,693.27
5. Step 5: Solve for x
   x = 5,404,856,693.27/66,729.96
6. Step 6: Final answer
   x = 80,995.95