Finding the Fourth Proportional to 74,123.33, 102,288.96 and 40,131.54

Step by Step Solution

1. Step 1: Write the proportion equation
   74,123.33 : 102,288.96 = 40,131.54 : x
2. Step 2: Convert to fraction form
   74,123.33/102,288.96 = 40,131.54/x
3. Step 3: Cross multiply
   74,123.33x = 102,288.96 × 40,131.54
4. Step 4: Simplify right side
   74,123.33x = 4,105,013,489.80
5. Step 5: Solve for x
   x = 4,105,013,489.80/74,123.33
6. Step 6: Final answer
   x = 55,380.86