Finding the Fourth Proportional to 59,289.30, 88,982.55 and 57,345.30

Step by Step Solution

1. Step 1: Write the proportion equation
   59,289.30 : 88,982.55 = 57,345.30 : x
2. Step 2: Convert to fraction form
   59,289.30/88,982.55 = 57,345.30/x
3. Step 3: Cross multiply
   59,289.30x = 88,982.55 × 57,345.30
4. Step 4: Simplify right side
   59,289.30x = 5,102,731,024.52
5. Step 5: Solve for x
   x = 5,102,731,024.52/59,289.30
6. Step 6: Final answer
   x = 86,064.96