Finding the Fourth Proportional to 544,429.42, 816,641.39 and 139,619.81

Step by Step Solution

1. Step 1: Write the proportion equation
   544,429.42 : 816,641.39 = 139,619.81 : x
2. Step 2: Convert to fraction form
   544,429.42/816,641.39 = 139,619.81/x
3. Step 3: Cross multiply
   544,429.42x = 816,641.39 × 139,619.81
4. Step 4: Simplify right side
   544,429.42x = 114,019,318,100.59
5. Step 5: Solve for x
   x = 114,019,318,100.59/544,429.42
6. Step 6: Final answer
   x = 209,429.02