Finding the Fourth Proportional to 55,108.72, 76,037.52 and 31,229.92

Step by Step Solution

1. Step 1: Write the proportion equation
   55,108.72 : 76,037.52 = 31,229.92 : x
2. Step 2: Convert to fraction form
   55,108.72/76,037.52 = 31,229.92/x
3. Step 3: Cross multiply
   55,108.72x = 76,037.52 × 31,229.92
4. Step 4: Simplify right side
   55,108.72x = 2,374,645,666.60
5. Step 5: Solve for x
   x = 2,374,645,666.60/55,108.72
6. Step 6: Final answer
   x = 43,090.20