Finding the Fourth Proportional to 57,005.58, 78,667.12 and 31,855.08

Step by Step Solution

1. Step 1: Write the proportion equation
   57,005.58 : 78,667.12 = 31,855.08 : x
2. Step 2: Convert to fraction form
   57,005.58/78,667.12 = 31,855.08/x
3. Step 3: Cross multiply
   57,005.58x = 78,667.12 × 31,855.08
4. Step 4: Simplify right side
   57,005.58x = 2,505,947,400.97
5. Step 5: Solve for x
   x = 2,505,947,400.97/57,005.58
6. Step 6: Final answer
   x = 43,959.69