Finding the Fourth Proportional to 230,743.32, 318,425.14 and 128,767.69

Step by Step Solution

1. Step 1: Write the proportion equation
   230,743.32 : 318,425.14 = 128,767.69 : x
2. Step 2: Convert to fraction form
   230,743.32/318,425.14 = 128,767.69/x
3. Step 3: Cross multiply
   230,743.32x = 318,425.14 × 128,767.69
4. Step 4: Simplify right side
   230,743.32x = 41,002,870,274.72
5. Step 5: Solve for x
   x = 41,002,870,274.72/230,743.32
6. Step 6: Final answer
   x = 177,699.06