Finding the Fourth Proportional to 78,487.14, 108,311.72 and 42,677.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,487.14 : 108,311.72 = 42,677.18 : x
2. Step 2: Convert to fraction form
   78,487.14/108,311.72 = 42,677.18/x
3. Step 3: Cross multiply
   78,487.14x = 108,311.72 × 42,677.18
4. Step 4: Simplify right side
   78,487.14x = 4,622,438,770.55
5. Step 5: Solve for x
   x = 4,622,438,770.55/78,487.14
6. Step 6: Final answer
   x = 58,894.22