Finding the Fourth Proportional to 59,062.81, 80,854.59 and 58,640.70

Step by Step Solution

1. Step 1: Write the proportion equation
   59,062.81 : 80,854.59 = 58,640.70 : x
2. Step 2: Convert to fraction form
   59,062.81/80,854.59 = 58,640.70/x
3. Step 3: Cross multiply
   59,062.81x = 80,854.59 × 58,640.70
4. Step 4: Simplify right side
   59,062.81x = 4,741,369,204.94
5. Step 5: Solve for x
   x = 4,741,369,204.94/59,062.81
6. Step 6: Final answer
   x = 80,276.73