Finding the Fourth Proportional to 45,615.60, 62,950.50 and 28,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,615.60 : 62,950.50 = 28,620.50 : x
2. Step 2: Convert to fraction form
   45,615.60/62,950.50 = 28,620.50/x
3. Step 3: Cross multiply
   45,615.60x = 62,950.50 × 28,620.50
4. Step 4: Simplify right side
   45,615.60x = 1,801,674,470.50
5. Step 5: Solve for x
   x = 1,801,674,470.50/45,615.60
6. Step 6: Final answer
   x = 39,496.89