Finding the Fourth Proportional to 123,501.45, 170,440.55 and 75,122.29

Step by Step Solution

1. Step 1: Write the proportion equation
   123,501.45 : 170,440.55 = 75,122.29 : x
2. Step 2: Convert to fraction form
   123,501.45/170,440.55 = 75,122.29/x
3. Step 3: Cross multiply
   123,501.45x = 170,440.55 × 75,122.29
4. Step 4: Simplify right side
   123,501.45x = 12,803,884,424.86
5. Step 5: Solve for x
   x = 12,803,884,424.86/123,501.45
6. Step 6: Final answer
   x = 103,673.96