Finding the Fourth Proportional to 78,434.88, 108,240.82 and 42,624.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,434.88 : 108,240.82 = 42,624.89 : x
2. Step 2: Convert to fraction form
   78,434.88/108,240.82 = 42,624.89/x
3. Step 3: Cross multiply
   78,434.88x = 108,240.82 × 42,624.89
4. Step 4: Simplify right side
   78,434.88x = 4,613,753,046.01
5. Step 5: Solve for x
   x = 4,613,753,046.01/78,434.88
6. Step 6: Final answer
   x = 58,822.72