Finding the Fourth Proportional to 78,511.87, 108,348.60 and 42,704.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,511.87 : 108,348.60 = 42,704.15 : x
2. Step 2: Convert to fraction form
   78,511.87/108,348.60 = 42,704.15/x
3. Step 3: Cross multiply
   78,511.87x = 108,348.60 × 42,704.15
4. Step 4: Simplify right side
   78,511.87x = 4,626,934,866.69
5. Step 5: Solve for x
   x = 4,626,934,866.69/78,511.87
6. Step 6: Final answer
   x = 58,932.93