Finding the Fourth Proportional to 55,190.28, 76,071.50 and 39,036.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,190.28 : 76,071.50 = 39,036.72 : x
2. Step 2: Convert to fraction form
   55,190.28/76,071.50 = 39,036.72/x
3. Step 3: Cross multiply
   55,190.28x = 76,071.50 × 39,036.72
4. Step 4: Simplify right side
   55,190.28x = 2,969,581,650.30
5. Step 5: Solve for x
   x = 2,969,581,650.30/55,190.28
6. Step 6: Final answer
   x = 53,806.24