Finding the Fourth Proportional to 123,290.18, 170,149.43 and 69,579.89

Step by Step Solution

1. Step 1: Write the proportion equation
   123,290.18 : 170,149.43 = 69,579.89 : x
2. Step 2: Convert to fraction form
   123,290.18/170,149.43 = 69,579.89/x
3. Step 3: Cross multiply
   123,290.18x = 170,149.43 × 69,579.89
4. Step 4: Simplify right side
   123,290.18x = 11,838,977,946.17
5. Step 5: Solve for x
   x = 11,838,977,946.17/123,290.18
6. Step 6: Final answer
   x = 96,025.32