Finding the Fourth Proportional to 123,356.42, 170,235 and 75,636.08

Step by Step Solution

1. Step 1: Write the proportion equation
   123,356.42 : 170,235 = 75,636.08 : x
2. Step 2: Convert to fraction form
   123,356.42/170,235 = 75,636.08/x
3. Step 3: Cross multiply
   123,356.42x = 170,235 × 75,636.08
4. Step 4: Simplify right side
   123,356.42x = 12,875,908,078.80
5. Step 5: Solve for x
   x = 12,875,908,078.80/123,356.42
6. Step 6: Final answer
   x = 104,379.72