Finding the Fourth Proportional to 59,804.59, 89,170.63 and 57,643.60

Step by Step Solution

1. Step 1: Write the proportion equation
   59,804.59 : 89,170.63 = 57,643.60 : x
2. Step 2: Convert to fraction form
   59,804.59/89,170.63 = 57,643.60/x
3. Step 3: Cross multiply
   59,804.59x = 89,170.63 × 57,643.60
4. Step 4: Simplify right side
   59,804.59x = 5,140,116,127.47
5. Step 5: Solve for x
   x = 5,140,116,127.47/59,804.59
6. Step 6: Final answer
   x = 85,948.52