Finding the Fourth Proportional to 123,541, 170,504.88 and 78,223.20

Step by Step Solution

1. Step 1: Write the proportion equation
   123,541 : 170,504.88 = 78,223.20 : x
2. Step 2: Convert to fraction form
   123,541/170,504.88 = 78,223.20/x
3. Step 3: Cross multiply
   123,541x = 170,504.88 × 78,223.20
4. Step 4: Simplify right side
   123,541x = 13,337,437,329.22
5. Step 5: Solve for x
   x = 13,337,437,329.22/123,541
6. Step 6: Final answer
   x = 107,959.60