Finding the Fourth Proportional to 78,597.42, 108,464.45 and 42,787.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,597.42 : 108,464.45 = 42,787.70 : x
2. Step 2: Convert to fraction form
   78,597.42/108,464.45 = 42,787.70/x
3. Step 3: Cross multiply
   78,597.42x = 108,464.45 × 42,787.70
4. Step 4: Simplify right side
   78,597.42x = 4,640,943,591.00
5. Step 5: Solve for x
   x = 4,640,943,591.00/78,597.42
6. Step 6: Final answer
   x = 59,047.02