Finding the Fourth Proportional to 111,444.88, 166,978.60 and 79,693.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,444.88 : 166,978.60 = 79,693.72 : x
2. Step 2: Convert to fraction form
   111,444.88/166,978.60 = 79,693.72/x
3. Step 3: Cross multiply
   111,444.88x = 166,978.60 × 79,693.72
4. Step 4: Simplify right side
   111,444.88x = 13,307,145,794.39
5. Step 5: Solve for x
   x = 13,307,145,794.39/111,444.88
6. Step 6: Final answer
   x = 119,405.63