Finding the Fourth Proportional to 78,605.69, 108,476.28 and 42,795.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,605.69 : 108,476.28 = 42,795.60 : x
2. Step 2: Convert to fraction form
   78,605.69/108,476.28 = 42,795.60/x
3. Step 3: Cross multiply
   78,605.69x = 108,476.28 × 42,795.60
4. Step 4: Simplify right side
   78,605.69x = 4,642,307,488.37
5. Step 5: Solve for x
   x = 4,642,307,488.37/78,605.69
6. Step 6: Final answer
   x = 59,058.16