Finding the Fourth Proportional to 174,665.30, 261,825.15 and 85,846.10

Step by Step Solution

1. Step 1: Write the proportion equation
   174,665.30 : 261,825.15 = 85,846.10 : x
2. Step 2: Convert to fraction form
   174,665.30/261,825.15 = 85,846.10/x
3. Step 3: Cross multiply
   174,665.30x = 261,825.15 × 85,846.10
4. Step 4: Simplify right side
   174,665.30x = 22,476,668,009.42
5. Step 5: Solve for x
   x = 22,476,668,009.42/174,665.30
6. Step 6: Final answer
   x = 128,684.22