Finding the Fourth Proportional to 57,897.48, 86,796.99 and 55,141.86

Step by Step Solution

1. Step 1: Write the proportion equation
   57,897.48 : 86,796.99 = 55,141.86 : x
2. Step 2: Convert to fraction form
   57,897.48/86,796.99 = 55,141.86/x
3. Step 3: Cross multiply
   57,897.48x = 86,796.99 × 55,141.86
4. Step 4: Simplify right side
   57,897.48x = 4,786,147,471.00
5. Step 5: Solve for x
   x = 4,786,147,471.00/57,897.48
6. Step 6: Final answer
   x = 82,665.90