Finding the Fourth Proportional to 78,465.69, 108,281.37 and 42,656.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,465.69 : 108,281.37 = 42,656.59 : x
2. Step 2: Convert to fraction form
   78,465.69/108,281.37 = 42,656.59/x
3. Step 3: Cross multiply
   78,465.69x = 108,281.37 × 42,656.59
4. Step 4: Simplify right side
   78,465.69x = 4,618,914,004.73
5. Step 5: Solve for x
   x = 4,618,914,004.73/78,465.69
6. Step 6: Final answer
   x = 58,865.40