Finding the Fourth Proportional to 61,936.20, 85,387.32 and 42,554.52

Step by Step Solution

1. Step 1: Write the proportion equation
   61,936.20 : 85,387.32 = 42,554.52 : x
2. Step 2: Convert to fraction form
   61,936.20/85,387.32 = 42,554.52/x
3. Step 3: Cross multiply
   61,936.20x = 85,387.32 × 42,554.52
4. Step 4: Simplify right side
   61,936.20x = 3,633,616,416.69
5. Step 5: Solve for x
   x = 3,633,616,416.69/61,936.20
6. Step 6: Final answer
   x = 58,667.09