Finding the Fourth Proportional to 78,776.92, 108,708.72 and 42,967.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,776.92 : 108,708.72 = 42,967.12 : x
2. Step 2: Convert to fraction form
   78,776.92/108,708.72 = 42,967.12/x
3. Step 3: Cross multiply
   78,776.92x = 108,708.72 × 42,967.12
4. Step 4: Simplify right side
   78,776.92x = 4,670,900,617.29
5. Step 5: Solve for x
   x = 4,670,900,617.29/78,776.92
6. Step 6: Final answer
   x = 59,292.76