Finding the Fourth Proportional to 111,145.16, 166,359.76 and 73,225.74

Step by Step Solution

1. Step 1: Write the proportion equation
   111,145.16 : 166,359.76 = 73,225.74 : x
2. Step 2: Convert to fraction form
   111,145.16/166,359.76 = 73,225.74/x
3. Step 3: Cross multiply
   111,145.16x = 166,359.76 × 73,225.74
4. Step 4: Simplify right side
   111,145.16x = 12,181,816,973.01
5. Step 5: Solve for x
   x = 12,181,816,973.01/111,145.16
6. Step 6: Final answer
   x = 109,602.76