Finding the Fourth Proportional to 123,358.15, 185,060.58 and 39,139.51

Step by Step Solution

1. Step 1: Write the proportion equation
   123,358.15 : 185,060.58 = 39,139.51 : x
2. Step 2: Convert to fraction form
   123,358.15/185,060.58 = 39,139.51/x
3. Step 3: Cross multiply
   123,358.15x = 185,060.58 × 39,139.51
4. Step 4: Simplify right side
   123,358.15x = 7,243,180,421.52
5. Step 5: Solve for x
   x = 7,243,180,421.52/123,358.15
6. Step 6: Final answer
   x = 58,716.68