Finding the Fourth Proportional to 59,739.30, 89,657.55 and 57,795.30

Step by Step Solution

1. Step 1: Write the proportion equation
   59,739.30 : 89,657.55 = 57,795.30 : x
2. Step 2: Convert to fraction form
   59,739.30/89,657.55 = 57,795.30/x
3. Step 3: Cross multiply
   59,739.30x = 89,657.55 × 57,795.30
4. Step 4: Simplify right side
   59,739.30x = 5,181,784,999.52
5. Step 5: Solve for x
   x = 5,181,784,999.52/59,739.30
6. Step 6: Final answer
   x = 86,739.97