Finding the Fourth Proportional to 123,781.32, 170,804.16 and 69,335.55

Step by Step Solution

1. Step 1: Write the proportion equation
   123,781.32 : 170,804.16 = 69,335.55 : x
2. Step 2: Convert to fraction form
   123,781.32/170,804.16 = 69,335.55/x
3. Step 3: Cross multiply
   123,781.32x = 170,804.16 × 69,335.55
4. Step 4: Simplify right side
   123,781.32x = 11,842,800,375.89
5. Step 5: Solve for x
   x = 11,842,800,375.89/123,781.32
6. Step 6: Final answer
   x = 95,675.18