Finding the Fourth Proportional to 88,519.32, 123,005.12 and 87,609.06

Step by Step Solution

1. Step 1: Write the proportion equation
   88,519.32 : 123,005.12 = 87,609.06 : x
2. Step 2: Convert to fraction form
   88,519.32/123,005.12 = 87,609.06/x
3. Step 3: Cross multiply
   88,519.32x = 123,005.12 × 87,609.06
4. Step 4: Simplify right side
   88,519.32x = 10,776,362,500.34
5. Step 5: Solve for x
   x = 10,776,362,500.34/88,519.32
6. Step 6: Final answer
   x = 121,740.23