Finding the Fourth Proportional to 78,433.92, 108,239.83 and 42,624.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,433.92 : 108,239.83 = 42,624.50 : x
2. Step 2: Convert to fraction form
   78,433.92/108,239.83 = 42,624.50/x
3. Step 3: Cross multiply
   78,433.92x = 108,239.83 × 42,624.50
4. Step 4: Simplify right side
   78,433.92x = 4,613,667,986.07
5. Step 5: Solve for x
   x = 4,613,667,986.07/78,433.92
6. Step 6: Final answer
   x = 58,822.36