Finding the Fourth Proportional to 169,585.97, 254,384.37 and 85,300.10

Step by Step Solution

1. Step 1: Write the proportion equation
   169,585.97 : 254,384.37 = 85,300.10 : x
2. Step 2: Convert to fraction form
   169,585.97/254,384.37 = 85,300.10/x
3. Step 3: Cross multiply
   169,585.97x = 254,384.37 × 85,300.10
4. Step 4: Simplify right side
   169,585.97x = 21,699,010,927.52
5. Step 5: Solve for x
   x = 21,699,010,927.52/169,585.97
6. Step 6: Final answer
   x = 127,952.86