Finding the Fourth Proportional to 123,201.81, 170,019.41 and 69,487.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,201.81 : 170,019.41 = 69,487.88 : x
2. Step 2: Convert to fraction form
   123,201.81/170,019.41 = 69,487.88/x
3. Step 3: Cross multiply
   123,201.81x = 170,019.41 × 69,487.88
4. Step 4: Simplify right side
   123,201.81x = 11,814,287,162.21
5. Step 5: Solve for x
   x = 11,814,287,162.21/123,201.81
6. Step 6: Final answer
   x = 95,893.78