Finding the Fourth Proportional to 238,399.16, 328,994.33 and 129,505.52

Step by Step Solution

1. Step 1: Write the proportion equation
   238,399.16 : 328,994.33 = 129,505.52 : x
2. Step 2: Convert to fraction form
   238,399.16/328,994.33 = 129,505.52/x
3. Step 3: Cross multiply
   238,399.16x = 328,994.33 × 129,505.52
4. Step 4: Simplify right side
   238,399.16x = 42,606,581,958.66
5. Step 5: Solve for x
   x = 42,606,581,958.66/238,399.16
6. Step 6: Final answer
   x = 178,719.52