Finding the Fourth Proportional to 76,821.87, 106,014.60 and 42,832.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,821.87 : 106,014.60 = 42,832.50 : x
2. Step 2: Convert to fraction form
   76,821.87/106,014.60 = 42,832.50/x
3. Step 3: Cross multiply
   76,821.87x = 106,014.60 × 42,832.50
4. Step 4: Simplify right side
   76,821.87x = 4,540,870,354.50
5. Step 5: Solve for x
   x = 4,540,870,354.50/76,821.87
6. Step 6: Final answer
   x = 59,109.08