Finding the Fourth Proportional to 230,315.82, 345,396.57 and 88,128.03

Step by Step Solution

1. Step 1: Write the proportion equation
   230,315.82 : 345,396.57 = 88,128.03 : x
2. Step 2: Convert to fraction form
   230,315.82/345,396.57 = 88,128.03/x
3. Step 3: Cross multiply
   230,315.82x = 345,396.57 × 88,128.03
4. Step 4: Simplify right side
   230,315.82x = 30,439,119,282.86
5. Step 5: Solve for x
   x = 30,439,119,282.86/230,315.82
6. Step 6: Final answer
   x = 132,162.52