Finding the Fourth Proportional to 78,464.55, 108,282.02 and 42,653.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,464.55 : 108,282.02 = 42,653.79 : x
2. Step 2: Convert to fraction form
   78,464.55/108,282.02 = 42,653.79/x
3. Step 3: Cross multiply
   78,464.55x = 108,282.02 × 42,653.79
4. Step 4: Simplify right side
   78,464.55x = 4,618,638,328.59
5. Step 5: Solve for x
   x = 4,618,638,328.59/78,464.55
6. Step 6: Final answer
   x = 58,862.74