Finding the Fourth Proportional to 78,671.20, 108,566.04 and 42,861.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,671.20 : 108,566.04 = 42,861.52 : x
2. Step 2: Convert to fraction form
   78,671.20/108,566.04 = 42,861.52/x
3. Step 3: Cross multiply
   78,671.20x = 108,566.04 × 42,861.52
4. Step 4: Simplify right side
   78,671.20x = 4,653,305,494.78
5. Step 5: Solve for x
   x = 4,653,305,494.78/78,671.20
6. Step 6: Final answer
   x = 59,148.78