Finding the Fourth Proportional to 139,917.82, 193,091.80 and 79,498.71

Step by Step Solution

1. Step 1: Write the proportion equation
   139,917.82 : 193,091.80 = 79,498.71 : x
2. Step 2: Convert to fraction form
   139,917.82/193,091.80 = 79,498.71/x
3. Step 3: Cross multiply
   139,917.82x = 193,091.80 × 79,498.71
4. Step 4: Simplify right side
   139,917.82x = 15,350,548,046.12
5. Step 5: Solve for x
   x = 15,350,548,046.12/139,917.82
6. Step 6: Final answer
   x = 109,711.17