Finding the Fourth Proportional to 78,084.70, 107,756.85 and 42,274.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,084.70 : 107,756.85 = 42,274.69 : x
2. Step 2: Convert to fraction form
   78,084.70/107,756.85 = 42,274.69/x
3. Step 3: Cross multiply
   78,084.70x = 107,756.85 × 42,274.69
4. Step 4: Simplify right side
   78,084.70x = 4,555,387,429.13
5. Step 5: Solve for x
   x = 4,555,387,429.13/78,084.70
6. Step 6: Final answer
   x = 58,339.05