Finding the Fourth Proportional to 140,213.88, 193,517.38 and 89,173.40

Step by Step Solution

1. Step 1: Write the proportion equation
   140,213.88 : 193,517.38 = 89,173.40 : x
2. Step 2: Convert to fraction form
   140,213.88/193,517.38 = 89,173.40/x
3. Step 3: Cross multiply
   140,213.88x = 193,517.38 × 89,173.40
4. Step 4: Simplify right side
   140,213.88x = 17,256,602,733.69
5. Step 5: Solve for x
   x = 17,256,602,733.69/140,213.88
6. Step 6: Final answer
   x = 123,073.43