Finding the Fourth Proportional to 78,788.64, 108,722.16 and 42,976.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,788.64 : 108,722.16 = 42,976.56 : x
2. Step 2: Convert to fraction form
   78,788.64/108,722.16 = 42,976.56/x
3. Step 3: Cross multiply
   78,788.64x = 108,722.16 × 42,976.56
4. Step 4: Simplify right side
   78,788.64x = 4,672,504,432.57
5. Step 5: Solve for x
   x = 4,672,504,432.57/78,788.64
6. Step 6: Final answer
   x = 59,304.29