Finding the Fourth Proportional to 139,437.03, 192,422.56 and 79,019.17

Step by Step Solution

1. Step 1: Write the proportion equation
   139,437.03 : 192,422.56 = 79,019.17 : x
2. Step 2: Convert to fraction form
   139,437.03/192,422.56 = 79,019.17/x
3. Step 3: Cross multiply
   139,437.03x = 192,422.56 × 79,019.17
4. Step 4: Simplify right side
   139,437.03x = 15,205,070,980.48
5. Step 5: Solve for x
   x = 15,205,070,980.48/139,437.03
6. Step 6: Final answer
   x = 109,046.15