Finding the Fourth Proportional to 140,141.61, 193,399.70 and 79,721.01

Step by Step Solution

1. Step 1: Write the proportion equation
   140,141.61 : 193,399.70 = 79,721.01 : x
2. Step 2: Convert to fraction form
   140,141.61/193,399.70 = 79,721.01/x
3. Step 3: Cross multiply
   140,141.61x = 193,399.70 × 79,721.01
4. Step 4: Simplify right side
   140,141.61x = 15,418,019,019.09
5. Step 5: Solve for x
   x = 15,418,019,019.09/140,141.61
6. Step 6: Final answer
   x = 110,017.42