Finding the Fourth Proportional to 76,478.24, 105,541.20 and 42,943.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,478.24 : 105,541.20 = 42,943.52 : x
2. Step 2: Convert to fraction form
   76,478.24/105,541.20 = 42,943.52/x
3. Step 3: Cross multiply
   76,478.24x = 105,541.20 × 42,943.52
4. Step 4: Simplify right side
   76,478.24x = 4,532,310,633.02
5. Step 5: Solve for x
   x = 4,532,310,633.02/76,478.24
6. Step 6: Final answer
   x = 59,262.75