Finding the Fourth Proportional to 78,084.73, 107,756.78 and 42,274.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,084.73 : 107,756.78 = 42,274.73 : x
2. Step 2: Convert to fraction form
   78,084.73/107,756.78 = 42,274.73/x
3. Step 3: Cross multiply
   78,084.73x = 107,756.78 × 42,274.73
4. Step 4: Simplify right side
   78,084.73x = 4,555,388,838.19
5. Step 5: Solve for x
   x = 4,555,388,838.19/78,084.73
6. Step 6: Final answer
   x = 58,339.05