Finding the Fourth Proportional to 78,740.16, 108,662.06 and 42,930.43

Step by Step Solution

1. Step 1: Write the proportion equation
   78,740.16 : 108,662.06 = 42,930.43 : x
2. Step 2: Convert to fraction form
   78,740.16/108,662.06 = 42,930.43/x
3. Step 3: Cross multiply
   78,740.16x = 108,662.06 × 42,930.43
4. Step 4: Simplify right side
   78,740.16x = 4,664,908,960.49
5. Step 5: Solve for x
   x = 4,664,908,960.49/78,740.16
6. Step 6: Final answer
   x = 59,244.34