Finding the Fourth Proportional to 76,485.50, 105,549.99 and 42,951.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,485.50 : 105,549.99 = 42,951.50 : x
2. Step 2: Convert to fraction form
   76,485.50/105,549.99 = 42,951.50/x
3. Step 3: Cross multiply
   76,485.50x = 105,549.99 × 42,951.50
4. Step 4: Simplify right side
   76,485.50x = 4,533,530,395.49
5. Step 5: Solve for x
   x = 4,533,530,395.49/76,485.50
6. Step 6: Final answer
   x = 59,273.07