Finding the Fourth Proportional to 39,145.69, 58,718.37 and 14,179.89

Step by Step Solution

1. Step 1: Write the proportion equation
   39,145.69 : 58,718.37 = 14,179.89 : x
2. Step 2: Convert to fraction form
   39,145.69/58,718.37 = 14,179.89/x
3. Step 3: Cross multiply
   39,145.69x = 58,718.37 × 14,179.89
4. Step 4: Simplify right side
   39,145.69x = 832,620,209.82
5. Step 5: Solve for x
   x = 832,620,209.82/39,145.69
6. Step 6: Final answer
   x = 21,269.78