Finding the Fourth Proportional to 55,538.72, 76,644.96 and 31,669.28

Step by Step Solution

1. Step 1: Write the proportion equation
   55,538.72 : 76,644.96 = 31,669.28 : x
2. Step 2: Convert to fraction form
   55,538.72/76,644.96 = 31,669.28/x
3. Step 3: Cross multiply
   55,538.72x = 76,644.96 × 31,669.28
4. Step 4: Simplify right side
   55,538.72x = 2,427,290,698.83
5. Step 5: Solve for x
   x = 2,427,290,698.83/55,538.72
6. Step 6: Final answer
   x = 43,704.48