Finding the Fourth Proportional to 140,062.50, 193,286.25 and 89,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,062.50 : 193,286.25 = 89,761.50 : x
2. Step 2: Convert to fraction form
   140,062.50/193,286.25 = 89,761.50/x
3. Step 3: Cross multiply
   140,062.50x = 193,286.25 × 89,761.50
4. Step 4: Simplify right side
   140,062.50x = 17,349,663,729.38
5. Step 5: Solve for x
   x = 17,349,663,729.38/140,062.50
6. Step 6: Final answer
   x = 123,870.87