Finding the Fourth Proportional to 51,155.50, 70,604.32 and 28,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,155.50 : 70,604.32 = 28,799.50 : x
2. Step 2: Convert to fraction form
   51,155.50/70,604.32 = 28,799.50/x
3. Step 3: Cross multiply
   51,155.50x = 70,604.32 × 28,799.50
4. Step 4: Simplify right side
   51,155.50x = 2,033,369,113.84
5. Step 5: Solve for x
   x = 2,033,369,113.84/51,155.50
6. Step 6: Final answer
   x = 39,748.79