Finding the Fourth Proportional to 55,173.72, 76,141.20 and 31,303.96

Step by Step Solution

1. Step 1: Write the proportion equation
   55,173.72 : 76,141.20 = 31,303.96 : x
2. Step 2: Convert to fraction form
   55,173.72/76,141.20 = 31,303.96/x
3. Step 3: Cross multiply
   55,173.72x = 76,141.20 × 31,303.96
4. Step 4: Simplify right side
   55,173.72x = 2,383,521,079.15
5. Step 5: Solve for x
   x = 2,383,521,079.15/55,173.72
6. Step 6: Final answer
   x = 43,200.30