Finding the Fourth Proportional to 123,317.16, 170,181.08 and 74,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,317.16 : 170,181.08 = 74,902.72 : x
2. Step 2: Convert to fraction form
   123,317.16/170,181.08 = 74,902.72/x
3. Step 3: Cross multiply
   123,317.16x = 170,181.08 × 74,902.72
4. Step 4: Simplify right side
   123,317.16x = 12,747,025,784.54
5. Step 5: Solve for x
   x = 12,747,025,784.54/123,317.16
6. Step 6: Final answer
   x = 103,367.82