Finding the Fourth Proportional to 78,671.96, 108,567.32 and 42,861.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,671.96 : 108,567.32 = 42,861.97 : x
2. Step 2: Convert to fraction form
   78,671.96/108,567.32 = 42,861.97/x
3. Step 3: Cross multiply
   78,671.96x = 108,567.32 × 42,861.97
4. Step 4: Simplify right side
   78,671.96x = 4,653,409,212.82
5. Step 5: Solve for x
   x = 4,653,409,212.82/78,671.96
6. Step 6: Final answer
   x = 59,149.53