Finding the Fourth Proportional to 236,796.89, 326,778.50 and 129,373.07

Step by Step Solution

1. Step 1: Write the proportion equation
   236,796.89 : 326,778.50 = 129,373.07 : x
2. Step 2: Convert to fraction form
   236,796.89/326,778.50 = 129,373.07/x
3. Step 3: Cross multiply
   236,796.89x = 326,778.50 × 129,373.07
4. Step 4: Simplify right side
   236,796.89x = 42,276,336,444.54
5. Step 5: Solve for x
   x = 42,276,336,444.54/236,796.89
6. Step 6: Final answer
   x = 178,534.17