Finding the Fourth Proportional to 236,436.18, 326,280.72 and 129,005.88

Step by Step Solution

1. Step 1: Write the proportion equation
   236,436.18 : 326,280.72 = 129,005.88 : x
2. Step 2: Convert to fraction form
   236,436.18/326,280.72 = 129,005.88/x
3. Step 3: Cross multiply
   236,436.18x = 326,280.72 × 129,005.88
4. Step 4: Simplify right side
   236,436.18x = 42,092,131,410.63
5. Step 5: Solve for x
   x = 42,092,131,410.63/236,436.18
6. Step 6: Final answer
   x = 178,027.46