Finding the Fourth Proportional to 56,895, 78,515.10 and 31,744.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,895 : 78,515.10 = 31,744.50 : x
2. Step 2: Convert to fraction form
   56,895/78,515.10 = 31,744.50/x
3. Step 3: Cross multiply
   56,895x = 78,515.10 × 31,744.50
4. Step 4: Simplify right side
   56,895x = 2,492,422,591.95
5. Step 5: Solve for x
   x = 2,492,422,591.95/56,895
6. Step 6: Final answer
   x = 43,807.41