Finding the Fourth Proportional to 78,597.61, 108,461.30 and 42,787.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,597.61 : 108,461.30 = 42,787.58 : x
2. Step 2: Convert to fraction form
   78,597.61/108,461.30 = 42,787.58/x
3. Step 3: Cross multiply
   78,597.61x = 108,461.30 × 42,787.58
4. Step 4: Simplify right side
   78,597.61x = 4,640,795,794.41
5. Step 5: Solve for x
   x = 4,640,795,794.41/78,597.61
6. Step 6: Final answer
   x = 59,045.00