Finding the Fourth Proportional to 139,930.74, 193,109.63 and 79,511.63

Step by Step Solution

1. Step 1: Write the proportion equation
   139,930.74 : 193,109.63 = 79,511.63 : x
2. Step 2: Convert to fraction form
   139,930.74/193,109.63 = 79,511.63/x
3. Step 3: Cross multiply
   139,930.74x = 193,109.63 × 79,511.63
4. Step 4: Simplify right side
   139,930.74x = 15,354,460,086.89
5. Step 5: Solve for x
   x = 15,354,460,086.89/139,930.74
6. Step 6: Final answer
   x = 109,729.00