Finding the Fourth Proportional to 236,667.42, 326,598.89 and 129,237.12

Step by Step Solution

1. Step 1: Write the proportion equation
   236,667.42 : 326,598.89 = 129,237.12 : x
2. Step 2: Convert to fraction form
   236,667.42/326,598.89 = 129,237.12/x
3. Step 3: Cross multiply
   236,667.42x = 326,598.89 × 129,237.12
4. Step 4: Simplify right side
   236,667.42x = 42,208,699,292.61
5. Step 5: Solve for x
   x = 42,208,699,292.61/236,667.42
6. Step 6: Final answer
   x = 178,346.05