Finding the Fourth Proportional to 59,343.30, 89,063.55 and 57,399.30

Step by Step Solution

1. Step 1: Write the proportion equation
   59,343.30 : 89,063.55 = 57,399.30 : x
2. Step 2: Convert to fraction form
   59,343.30/89,063.55 = 57,399.30/x
3. Step 3: Cross multiply
   59,343.30x = 89,063.55 × 57,399.30
4. Step 4: Simplify right side
   59,343.30x = 5,112,185,425.52
5. Step 5: Solve for x
   x = 5,112,185,425.52/59,343.30
6. Step 6: Final answer
   x = 86,145.96