Finding the Fourth Proportional to 51,035.50, 70,429.35 and 28,679.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,035.50 : 70,429.35 = 28,679.50 : x
2. Step 2: Convert to fraction form
   51,035.50/70,429.35 = 28,679.50/x
3. Step 3: Cross multiply
   51,035.50x = 70,429.35 × 28,679.50
4. Step 4: Simplify right side
   51,035.50x = 2,019,878,543.33
5. Step 5: Solve for x
   x = 2,019,878,543.33/51,035.50
6. Step 6: Final answer
   x = 39,577.91