Finding the Fourth Proportional to 78,339.52, 108,108.54 and 42,529.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,339.52 : 108,108.54 = 42,529.48 : x
2. Step 2: Convert to fraction form
   78,339.52/108,108.54 = 42,529.48/x
3. Step 3: Cross multiply
   78,339.52x = 108,108.54 × 42,529.48
4. Step 4: Simplify right side
   78,339.52x = 4,597,799,989.76
5. Step 5: Solve for x
   x = 4,597,799,989.76/78,339.52
6. Step 6: Final answer
   x = 58,690.68