Finding the Fourth Proportional to 78,508.38, 108,338.45 and 42,698.37

Step by Step Solution

1. Step 1: Write the proportion equation
   78,508.38 : 108,338.45 = 42,698.37 : x
2. Step 2: Convert to fraction form
   78,508.38/108,338.45 = 42,698.37/x
3. Step 3: Cross multiply
   78,508.38x = 108,338.45 × 42,698.37
4. Step 4: Simplify right side
   78,508.38x = 4,625,875,009.83
5. Step 5: Solve for x
   x = 4,625,875,009.83/78,508.38
6. Step 6: Final answer
   x = 58,922.05