Finding the Fourth Proportional to 59,803.59, 89,169.14 and 57,642.60

Step by Step Solution

1. Step 1: Write the proportion equation
   59,803.59 : 89,169.14 = 57,642.60 : x
2. Step 2: Convert to fraction form
   59,803.59/89,169.14 = 57,642.60/x
3. Step 3: Cross multiply
   59,803.59x = 89,169.14 × 57,642.60
4. Step 4: Simplify right side
   59,803.59x = 5,139,940,781.15
5. Step 5: Solve for x
   x = 5,139,940,781.15/59,803.59
6. Step 6: Final answer
   x = 85,947.03