Finding the Fourth Proportional to 139,945.34, 193,117.28 and 79,507.59

Step by Step Solution

1. Step 1: Write the proportion equation
   139,945.34 : 193,117.28 = 79,507.59 : x
2. Step 2: Convert to fraction form
   139,945.34/193,117.28 = 79,507.59/x
3. Step 3: Cross multiply
   139,945.34x = 193,117.28 × 79,507.59
4. Step 4: Simplify right side
   139,945.34x = 15,354,290,294.04
5. Step 5: Solve for x
   x = 15,354,290,294.04/139,945.34
6. Step 6: Final answer
   x = 109,716.34