Finding the Fourth Proportional to 79,969.14, 120,026.28 and 42,560.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,969.14 : 120,026.28 = 42,560.72 : x
2. Step 2: Convert to fraction form
   79,969.14/120,026.28 = 42,560.72/x
3. Step 3: Cross multiply
   79,969.14x = 120,026.28 × 42,560.72
4. Step 4: Simplify right side
   79,969.14x = 5,108,404,895.72
5. Step 5: Solve for x
   x = 5,108,404,895.72/79,969.14
6. Step 6: Final answer
   x = 63,879.70