Finding the Fourth Proportional to 59,792.25, 89,688.50 and 56,138.60

Step by Step Solution

1. Step 1: Write the proportion equation
   59,792.25 : 89,688.50 = 56,138.60 : x
2. Step 2: Convert to fraction form
   59,792.25/89,688.50 = 56,138.60/x
3. Step 3: Cross multiply
   59,792.25x = 89,688.50 × 56,138.60
4. Step 4: Simplify right side
   59,792.25x = 5,034,986,401.84
5. Step 5: Solve for x
   x = 5,034,986,401.84/59,792.25
6. Step 6: Final answer
   x = 84,208.00