Finding the Fourth Proportional to 78,632.72, 108,517.70 and 59,216.87

Step by Step Solution

1. Step 1: Write the proportion equation
   78,632.72 : 108,517.70 = 59,216.87 : x
2. Step 2: Convert to fraction form
   78,632.72/108,517.70 = 59,216.87/x
3. Step 3: Cross multiply
   78,632.72x = 108,517.70 × 59,216.87
4. Step 4: Simplify right side
   78,632.72x = 6,426,078,786.39
5. Step 5: Solve for x
   x = 6,426,078,786.39/78,632.72
6. Step 6: Final answer
   x = 81,722.70