Finding the Fourth Proportional to 123,200.15, 170,016.16 and 69,485.05

Step by Step Solution

1. Step 1: Write the proportion equation
   123,200.15 : 170,016.16 = 69,485.05 : x
2. Step 2: Convert to fraction form
   123,200.15/170,016.16 = 69,485.05/x
3. Step 3: Cross multiply
   123,200.15x = 170,016.16 × 69,485.05
4. Step 4: Simplify right side
   123,200.15x = 11,813,580,180.90
5. Step 5: Solve for x
   x = 11,813,580,180.90/123,200.15
6. Step 6: Final answer
   x = 95,889.33