Finding the Fourth Proportional to 112,399.96, 155,133.68 and 72,164.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,399.96 : 155,133.68 = 72,164.56 : x
2. Step 2: Convert to fraction form
   112,399.96/155,133.68 = 72,164.56/x
3. Step 3: Cross multiply
   112,399.96x = 155,133.68 × 72,164.56
4. Step 4: Simplify right side
   112,399.96x = 11,195,153,758.38
5. Step 5: Solve for x
   x = 11,195,153,758.38/112,399.96
6. Step 6: Final answer
   x = 99,601.05