Finding the Fourth Proportional to 78,674.83, 108,572.51 and 42,864.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,674.83 : 108,572.51 = 42,864.83 : x
2. Step 2: Convert to fraction form
   78,674.83/108,572.51 = 42,864.83/x
3. Step 3: Cross multiply
   78,674.83x = 108,572.51 × 42,864.83
4. Step 4: Simplify right side
   78,674.83x = 4,653,942,562.42
5. Step 5: Solve for x
   x = 4,653,942,562.42/78,674.83
6. Step 6: Final answer
   x = 59,154.15