Finding the Fourth Proportional to 78,755.62, 108,680.70 and 42,946.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,755.62 : 108,680.70 = 42,946.30 : x
2. Step 2: Convert to fraction form
   78,755.62/108,680.70 = 42,946.30/x
3. Step 3: Cross multiply
   78,755.62x = 108,680.70 × 42,946.30
4. Step 4: Simplify right side
   78,755.62x = 4,667,433,946.41
5. Step 5: Solve for x
   x = 4,667,433,946.41/78,755.62
6. Step 6: Final answer
   x = 59,264.77