Finding the Fourth Proportional to 78,554.22, 108,470.32 and 72,855.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,554.22 : 108,470.32 = 72,855.88 : x
2. Step 2: Convert to fraction form
   78,554.22/108,470.32 = 72,855.88/x
3. Step 3: Cross multiply
   78,554.22x = 108,470.32 × 72,855.88
4. Step 4: Simplify right side
   78,554.22x = 7,902,700,617.48
5. Step 5: Solve for x
   x = 7,902,700,617.48/78,554.22
6. Step 6: Final answer
   x = 100,601.86