Finding the Fourth Proportional to 78,579.18, 108,441.92 and 42,770.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,579.18 : 108,441.92 = 42,770.48 : x
2. Step 2: Convert to fraction form
   78,579.18/108,441.92 = 42,770.48/x
3. Step 3: Cross multiply
   78,579.18x = 108,441.92 × 42,770.48
4. Step 4: Simplify right side
   78,579.18x = 4,638,112,970.52
5. Step 5: Solve for x
   x = 4,638,112,970.52/78,579.18
6. Step 6: Final answer
   x = 59,024.71