Finding the Fourth Proportional to 80,955.86, 120,815.53 and 72,098.51

Step by Step Solution

1. Step 1: Write the proportion equation
   80,955.86 : 120,815.53 = 72,098.51 : x
2. Step 2: Convert to fraction form
   80,955.86/120,815.53 = 72,098.51/x
3. Step 3: Cross multiply
   80,955.86x = 120,815.53 × 72,098.51
4. Step 4: Simplify right side
   80,955.86x = 8,710,619,697.86
5. Step 5: Solve for x
   x = 8,710,619,697.86/80,955.86
6. Step 6: Final answer
   x = 107,597.15