Finding the Fourth Proportional to 405,950.58, 609,061.10 and 136,105.43

Step by Step Solution

1. Step 1: Write the proportion equation
   405,950.58 : 609,061.10 = 136,105.43 : x
2. Step 2: Convert to fraction form
   405,950.58/609,061.10 = 136,105.43/x
3. Step 3: Cross multiply
   405,950.58x = 609,061.10 × 136,105.43
4. Step 4: Simplify right side
   405,950.58x = 82,896,519,185.94
5. Step 5: Solve for x
   x = 82,896,519,185.94/405,950.58
6. Step 6: Final answer
   x = 204,203.48