Finding the Fourth Proportional to 78,965.56, 108,969.24 and 43,156.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,965.56 : 108,969.24 = 43,156.78 : x
2. Step 2: Convert to fraction form
   78,965.56/108,969.24 = 43,156.78/x
3. Step 3: Cross multiply
   78,965.56x = 108,969.24 × 43,156.78
4. Step 4: Simplify right side
   78,965.56x = 4,702,761,517.45
5. Step 5: Solve for x
   x = 4,702,761,517.45/78,965.56
6. Step 6: Final answer
   x = 59,554.59