Finding the Fourth Proportional to 139,853.34, 193,002.57 and 79,422.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,853.34 : 193,002.57 = 79,422.30 : x
2. Step 2: Convert to fraction form
   139,853.34/193,002.57 = 79,422.30/x
3. Step 3: Cross multiply
   139,853.34x = 193,002.57 × 79,422.30
4. Step 4: Simplify right side
   139,853.34x = 15,328,708,015.31
5. Step 5: Solve for x
   x = 15,328,708,015.31/139,853.34
6. Step 6: Final answer
   x = 109,605.59