Finding the Fourth Proportional to 51,070.50, 70,486.61 and 48,828.83

Step by Step Solution

1. Step 1: Write the proportion equation
   51,070.50 : 70,486.61 = 48,828.83 : x
2. Step 2: Convert to fraction form
   51,070.50/70,486.61 = 48,828.83/x
3. Step 3: Cross multiply
   51,070.50x = 70,486.61 × 48,828.83
4. Step 4: Simplify right side
   51,070.50x = 3,441,778,100.39
5. Step 5: Solve for x
   x = 3,441,778,100.39/51,070.50
6. Step 6: Final answer
   x = 67,392.68