Finding the Fourth Proportional to 78,599.07, 108,466.53 and 42,789.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,599.07 : 108,466.53 = 42,789.33 : x
2. Step 2: Convert to fraction form
   78,599.07/108,466.53 = 42,789.33/x
3. Step 3: Cross multiply
   78,599.07x = 108,466.53 × 42,789.33
4. Step 4: Simplify right side
   78,599.07x = 4,641,210,146.12
5. Step 5: Solve for x
   x = 4,641,210,146.12/78,599.07
6. Step 6: Final answer
   x = 59,049.17