Finding the Fourth Proportional to 319,980.89, 479,998.89 and 83,324.00

Step by Step Solution

1. Step 1: Write the proportion equation
   319,980.89 : 479,998.89 = 83,324.00 : x
2. Step 2: Convert to fraction form
   319,980.89/479,998.89 = 83,324.00/x
3. Step 3: Cross multiply
   319,980.89x = 479,998.89 × 83,324.00
4. Step 4: Simplify right side
   319,980.89x = 39,995,425,110.37
5. Step 5: Solve for x
   x = 39,995,425,110.37/319,980.89
6. Step 6: Final answer
   x = 124,993.17