Finding the Fourth Proportional to 123,478.32, 170,389.98 and 69,768

Step by Step Solution

1. Step 1: Write the proportion equation
   123,478.32 : 170,389.98 = 69,768 : x
2. Step 2: Convert to fraction form
   123,478.32/170,389.98 = 69,768/x
3. Step 3: Cross multiply
   123,478.32x = 170,389.98 × 69,768
4. Step 4: Simplify right side
   123,478.32x = 11,887,768,124.64
5. Step 5: Solve for x
   x = 11,887,768,124.64/123,478.32
6. Step 6: Final answer
   x = 96,274.13