Finding the Fourth Proportional to 78,645.35, 108,530.75 and 42,835.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,645.35 : 108,530.75 = 42,835.25 : x
2. Step 2: Convert to fraction form
   78,645.35/108,530.75 = 42,835.25/x
3. Step 3: Cross multiply
   78,645.35x = 108,530.75 × 42,835.25
4. Step 4: Simplify right side
   78,645.35x = 4,648,942,187.35
5. Step 5: Solve for x
   x = 4,648,942,187.35/78,645.35
6. Step 6: Final answer
   x = 59,112.74