Finding the Fourth Proportional to 123,420.45, 185,111.76 and 39,169.69

Step by Step Solution

1. Step 1: Write the proportion equation
   123,420.45 : 185,111.76 = 39,169.69 : x
2. Step 2: Convert to fraction form
   123,420.45/185,111.76 = 39,169.69/x
3. Step 3: Cross multiply
   123,420.45x = 185,111.76 × 39,169.69
4. Step 4: Simplify right side
   123,420.45x = 7,250,769,329.00
5. Step 5: Solve for x
   x = 7,250,769,329.00/123,420.45
6. Step 6: Final answer
   x = 58,748.53