Finding the Fourth Proportional to 436,164.09, 654,245.33 and 136,667.61

Step by Step Solution

1. Step 1: Write the proportion equation
   436,164.09 : 654,245.33 = 136,667.61 : x
2. Step 2: Convert to fraction form
   436,164.09/654,245.33 = 136,667.61/x
3. Step 3: Cross multiply
   436,164.09x = 654,245.33 × 136,667.61
4. Step 4: Simplify right side
   436,164.09x = 89,414,144,921.42
5. Step 5: Solve for x
   x = 89,414,144,921.42/436,164.09
6. Step 6: Final answer
   x = 205,001.16