Finding the Fourth Proportional to 111,380.56, 166,699.76 and 89,089.36

Step by Step Solution

1. Step 1: Write the proportion equation
   111,380.56 : 166,699.76 = 89,089.36 : x
2. Step 2: Convert to fraction form
   111,380.56/166,699.76 = 89,089.36/x
3. Step 3: Cross multiply
   111,380.56x = 166,699.76 × 89,089.36
4. Step 4: Simplify right side
   111,380.56x = 14,851,174,930.55
5. Step 5: Solve for x
   x = 14,851,174,930.55/111,380.56
6. Step 6: Final answer
   x = 133,337.23