Finding the Fourth Proportional to 149,112.32, 205,786.86 and 85,456.04

Step by Step Solution

1. Step 1: Write the proportion equation
   149,112.32 : 205,786.86 = 85,456.04 : x
2. Step 2: Convert to fraction form
   149,112.32/205,786.86 = 85,456.04/x
3. Step 3: Cross multiply
   149,112.32x = 205,786.86 × 85,456.04
4. Step 4: Simplify right side
   149,112.32x = 17,585,730,139.63
5. Step 5: Solve for x
   x = 17,585,730,139.63/149,112.32
6. Step 6: Final answer
   x = 117,936.13