Finding the Fourth Proportional to 78,338.52, 108,107.16 and 42,528.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,338.52 : 108,107.16 = 42,528.48 : x
2. Step 2: Convert to fraction form
   78,338.52/108,107.16 = 42,528.48/x
3. Step 3: Cross multiply
   78,338.52x = 108,107.16 × 42,528.48
4. Step 4: Simplify right side
   78,338.52x = 4,597,633,191.92
5. Step 5: Solve for x
   x = 4,597,633,191.92/78,338.52
6. Step 6: Final answer
   x = 58,689.30