Finding the Fourth Proportional to 139,494.42, 192,498.24 and 79,070.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,494.42 : 192,498.24 = 79,070.62 : x
2. Step 2: Convert to fraction form
   139,494.42/192,498.24 = 79,070.62/x
3. Step 3: Cross multiply
   139,494.42x = 192,498.24 × 79,070.62
4. Step 4: Simplify right side
   139,494.42x = 15,220,955,185.71
5. Step 5: Solve for x
   x = 15,220,955,185.71/139,494.42
6. Step 6: Final answer
   x = 109,115.15