Finding the Fourth Proportional to 145,745.33, 201,123.81 and 89,156.70

Step by Step Solution

1. Step 1: Write the proportion equation
   145,745.33 : 201,123.81 = 89,156.70 : x
2. Step 2: Convert to fraction form
   145,745.33/201,123.81 = 89,156.70/x
3. Step 3: Cross multiply
   145,745.33x = 201,123.81 × 89,156.70
4. Step 4: Simplify right side
   145,745.33x = 17,931,535,191.03
5. Step 5: Solve for x
   x = 17,931,535,191.03/145,745.33
6. Step 6: Final answer
   x = 123,033.35