Finding the Fourth Proportional to 123,524.52, 170,401.23 and 78,126.05

Step by Step Solution

1. Step 1: Write the proportion equation
   123,524.52 : 170,401.23 = 78,126.05 : x
2. Step 2: Convert to fraction form
   123,524.52/170,401.23 = 78,126.05/x
3. Step 3: Cross multiply
   123,524.52x = 170,401.23 × 78,126.05
4. Step 4: Simplify right side
   123,524.52x = 13,312,774,163.04
5. Step 5: Solve for x
   x = 13,312,774,163.04/123,524.52
6. Step 6: Final answer
   x = 107,774.34