Finding the Fourth Proportional to 55,515.78, 76,591.98 and 31,636.17

Step by Step Solution

1. Step 1: Write the proportion equation
   55,515.78 : 76,591.98 = 31,636.17 : x
2. Step 2: Convert to fraction form
   55,515.78/76,591.98 = 31,636.17/x
3. Step 3: Cross multiply
   55,515.78x = 76,591.98 × 31,636.17
4. Step 4: Simplify right side
   55,515.78x = 2,423,076,899.92
5. Step 5: Solve for x
   x = 2,423,076,899.92/55,515.78
6. Step 6: Final answer
   x = 43,646.63