Finding the Fourth Proportional to 140,036.31, 193,216.89 and 79,602.21

Step by Step Solution

1. Step 1: Write the proportion equation
   140,036.31 : 193,216.89 = 79,602.21 : x
2. Step 2: Convert to fraction form
   140,036.31/193,216.89 = 79,602.21/x
3. Step 3: Cross multiply
   140,036.31x = 193,216.89 × 79,602.21
4. Step 4: Simplify right side
   140,036.31x = 15,380,491,453.33
5. Step 5: Solve for x
   x = 15,380,491,453.33/140,036.31
6. Step 6: Final answer
   x = 109,832.17