Finding the Fourth Proportional to 149,111.32, 205,785.48 and 85,455.04

Step by Step Solution

1. Step 1: Write the proportion equation
   149,111.32 : 205,785.48 = 85,455.04 : x
2. Step 2: Convert to fraction form
   149,111.32/205,785.48 = 85,455.04/x
3. Step 3: Cross multiply
   149,111.32x = 205,785.48 × 85,455.04
4. Step 4: Simplify right side
   149,111.32x = 17,585,406,424.82
5. Step 5: Solve for x
   x = 17,585,406,424.82/149,111.32
6. Step 6: Final answer
   x = 117,934.75