Finding the Fourth Proportional to 123,656.42, 170,645.88 and 69,940.30

Step by Step Solution

1. Step 1: Write the proportion equation
   123,656.42 : 170,645.88 = 69,940.30 : x
2. Step 2: Convert to fraction form
   123,656.42/170,645.88 = 69,940.30/x
3. Step 3: Cross multiply
   123,656.42x = 170,645.88 × 69,940.30
4. Step 4: Simplify right side
   123,656.42x = 11,935,024,040.96
5. Step 5: Solve for x
   x = 11,935,024,040.96/123,656.42
6. Step 6: Final answer
   x = 96,517.63