Finding the Fourth Proportional to 78,769.17, 108,699.03 and 42,959.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,769.17 : 108,699.03 = 42,959.88 : x
2. Step 2: Convert to fraction form
   78,769.17/108,699.03 = 42,959.88/x
3. Step 3: Cross multiply
   78,769.17x = 108,699.03 × 42,959.88
4. Step 4: Simplify right side
   78,769.17x = 4,669,697,284.92
5. Step 5: Solve for x
   x = 4,669,697,284.92/78,769.17
6. Step 6: Final answer
   x = 59,283.31