Finding the Fourth Proportional to 55,088.76, 76,019.58 and 31,215.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,088.76 : 76,019.58 = 31,215.72 : x
2. Step 2: Convert to fraction form
   55,088.76/76,019.58 = 31,215.72/x
3. Step 3: Cross multiply
   55,088.76x = 76,019.58 × 31,215.72
4. Step 4: Simplify right side
   55,088.76x = 2,373,005,923.80
5. Step 5: Solve for x
   x = 2,373,005,923.80/55,088.76
6. Step 6: Final answer
   x = 43,076.05