Finding the Fourth Proportional to 243,429.86, 335,940.06 and 136,011.71

Step by Step Solution

1. Step 1: Write the proportion equation
   243,429.86 : 335,940.06 = 136,011.71 : x
2. Step 2: Convert to fraction form
   243,429.86/335,940.06 = 136,011.71/x
3. Step 3: Cross multiply
   243,429.86x = 335,940.06 × 136,011.71
4. Step 4: Simplify right side
   243,429.86x = 45,691,780,338.40
5. Step 5: Solve for x
   x = 45,691,780,338.40/243,429.86
6. Step 6: Final answer
   x = 187,699.99