Finding the Fourth Proportional to 55,168.49, 76,141.01 and 31,290.10

Step by Step Solution

1. Step 1: Write the proportion equation
   55,168.49 : 76,141.01 = 31,290.10 : x
2. Step 2: Convert to fraction form
   55,168.49/76,141.01 = 31,290.10/x
3. Step 3: Cross multiply
   55,168.49x = 76,141.01 × 31,290.10
4. Step 4: Simplify right side
   55,168.49x = 2,382,459,704.87
5. Step 5: Solve for x
   x = 2,382,459,704.87/55,168.49
6. Step 6: Final answer
   x = 43,185.15