Finding the Fourth Proportional to 53,995.50, 74,513.82 and 31,639.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,995.50 : 74,513.82 = 31,639.50 : x
2. Step 2: Convert to fraction form
   53,995.50/74,513.82 = 31,639.50/x
3. Step 3: Cross multiply
   53,995.50x = 74,513.82 × 31,639.50
4. Step 4: Simplify right side
   53,995.50x = 2,357,580,007.89
5. Step 5: Solve for x
   x = 2,357,580,007.89/53,995.50
6. Step 6: Final answer
   x = 43,662.53