Finding the Fourth Proportional to 78,727.08, 108,644.46 and 42,917.67

Step by Step Solution

1. Step 1: Write the proportion equation
   78,727.08 : 108,644.46 = 42,917.67 : x
2. Step 2: Convert to fraction form
   78,727.08/108,644.46 = 42,917.67/x
3. Step 3: Cross multiply
   78,727.08x = 108,644.46 × 42,917.67
4. Step 4: Simplify right side
   78,727.08x = 4,662,767,081.61
5. Step 5: Solve for x
   x = 4,662,767,081.61/78,727.08
6. Step 6: Final answer
   x = 59,226.98