Finding the Fourth Proportional to 59,798.72, 89,559.84 and 57,725.12

Step by Step Solution

1. Step 1: Write the proportion equation
   59,798.72 : 89,559.84 = 57,725.12 : x
2. Step 2: Convert to fraction form
   59,798.72/89,559.84 = 57,725.12/x
3. Step 3: Cross multiply
   59,798.72x = 89,559.84 × 57,725.12
4. Step 4: Simplify right side
   59,798.72x = 5,169,852,511.18
5. Step 5: Solve for x
   x = 5,169,852,511.18/59,798.72
6. Step 6: Final answer
   x = 86,454.23