Finding the Fourth Proportional to 78,584.60, 108,449.61 and 42,772.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,584.60 : 108,449.61 = 42,772.88 : x
2. Step 2: Convert to fraction form
   78,584.60/108,449.61 = 42,772.88/x
3. Step 3: Cross multiply
   78,584.60x = 108,449.61 × 42,772.88
4. Step 4: Simplify right side
   78,584.60x = 4,638,702,154.58
5. Step 5: Solve for x
   x = 4,638,702,154.58/78,584.60
6. Step 6: Final answer
   x = 59,028.13