Finding the Fourth Proportional to 78,624.64, 108,498.30 and 42,814.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,624.64 : 108,498.30 = 42,814.54 : x
2. Step 2: Convert to fraction form
   78,624.64/108,498.30 = 42,814.54/x
3. Step 3: Cross multiply
   78,624.64x = 108,498.30 × 42,814.54
4. Step 4: Simplify right side
   78,624.64x = 4,645,304,805.28
5. Step 5: Solve for x
   x = 4,645,304,805.28/78,624.64
6. Step 6: Final answer
   x = 59,082.05