Finding the Fourth Proportional to 57,603.50, 79,492.83 and 31,107.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,603.50 : 79,492.83 = 31,107.50 : x
2. Step 2: Convert to fraction form
   57,603.50/79,492.83 = 31,107.50/x
3. Step 3: Cross multiply
   57,603.50x = 79,492.83 × 31,107.50
4. Step 4: Simplify right side
   57,603.50x = 2,472,823,209.23
5. Step 5: Solve for x
   x = 2,472,823,209.23/57,603.50
6. Step 6: Final answer
   x = 42,928.35