Finding the Fourth Proportional to 219,127.05, 302,395.63 and 123,642.63

Step by Step Solution

1. Step 1: Write the proportion equation
   219,127.05 : 302,395.63 = 123,642.63 : x
2. Step 2: Convert to fraction form
   219,127.05/302,395.63 = 123,642.63/x
3. Step 3: Cross multiply
   219,127.05x = 302,395.63 × 123,642.63
4. Step 4: Simplify right side
   219,127.05x = 37,388,990,065.94
5. Step 5: Solve for x
   x = 37,388,990,065.94/219,127.05
6. Step 6: Final answer
   x = 170,627.00