Finding the Fourth Proportional to 55,213.29, 76,188.61 and 31,016.97

Step by Step Solution

1. Step 1: Write the proportion equation
   55,213.29 : 76,188.61 = 31,016.97 : x
2. Step 2: Convert to fraction form
   55,213.29/76,188.61 = 31,016.97/x
3. Step 3: Cross multiply
   55,213.29x = 76,188.61 × 31,016.97
4. Step 4: Simplify right side
   55,213.29x = 2,363,139,830.71
5. Step 5: Solve for x
   x = 2,363,139,830.71/55,213.29
6. Step 6: Final answer
   x = 42,800.20