Finding the Fourth Proportional to 78,306.48, 108,063.74 and 42,496.80

Step by Step Solution

1. Step 1: Write the proportion equation
   78,306.48 : 108,063.74 = 42,496.80 : x
2. Step 2: Convert to fraction form
   78,306.48/108,063.74 = 42,496.80/x
3. Step 3: Cross multiply
   78,306.48x = 108,063.74 × 42,496.80
4. Step 4: Simplify right side
   78,306.48x = 4,592,362,933.55
5. Step 5: Solve for x
   x = 4,592,362,933.55/78,306.48
6. Step 6: Final answer
   x = 58,646.01