Finding the Fourth Proportional to 65,379.12, 89,594.72 and 59,080.56

Step by Step Solution

1. Step 1: Write the proportion equation
   65,379.12 : 89,594.72 = 59,080.56 : x
2. Step 2: Convert to fraction form
   65,379.12/89,594.72 = 59,080.56/x
3. Step 3: Cross multiply
   65,379.12x = 89,594.72 × 59,080.56
4. Step 4: Simplify right side
   65,379.12x = 5,293,305,935.24
5. Step 5: Solve for x
   x = 5,293,305,935.24/65,379.12
6. Step 6: Final answer
   x = 80,963.25