Finding the Fourth Proportional to 85,934.52, 128,945.52 and 39,181.32

Step by Step Solution

1. Step 1: Write the proportion equation
   85,934.52 : 128,945.52 = 39,181.32 : x
2. Step 2: Convert to fraction form
   85,934.52/128,945.52 = 39,181.32/x
3. Step 3: Cross multiply
   85,934.52x = 128,945.52 × 39,181.32
4. Step 4: Simplify right side
   85,934.52x = 5,052,255,681.69
5. Step 5: Solve for x
   x = 5,052,255,681.69/85,934.52
6. Step 6: Final answer
   x = 58,791.92