Finding the Fourth Proportional to 78,748.16, 108,674.73 and 42,940.49

Step by Step Solution

1. Step 1: Write the proportion equation
   78,748.16 : 108,674.73 = 42,940.49 : x
2. Step 2: Convert to fraction form
   78,748.16/108,674.73 = 42,940.49/x
3. Step 3: Cross multiply
   78,748.16x = 108,674.73 × 42,940.49
4. Step 4: Simplify right side
   78,748.16x = 4,666,545,613.44
5. Step 5: Solve for x
   x = 4,666,545,613.44/78,748.16
6. Step 6: Final answer
   x = 59,259.11