Finding the Fourth Proportional to 123,638.27, 170,628.01 and 69,189.98

Step by Step Solution

1. Step 1: Write the proportion equation
   123,638.27 : 170,628.01 = 69,189.98 : x
2. Step 2: Convert to fraction form
   123,638.27/170,628.01 = 69,189.98/x
3. Step 3: Cross multiply
   123,638.27x = 170,628.01 × 69,189.98
4. Step 4: Simplify right side
   123,638.27x = 11,805,748,053.12
5. Step 5: Solve for x
   x = 11,805,748,053.12/123,638.27
6. Step 6: Final answer
   x = 95,486.20