Finding the Fourth Proportional to 139,895.07, 193,047.96 and 79,457.73

Step by Step Solution

1. Step 1: Write the proportion equation
   139,895.07 : 193,047.96 = 79,457.73 : x
2. Step 2: Convert to fraction form
   139,895.07/193,047.96 = 79,457.73/x
3. Step 3: Cross multiply
   139,895.07x = 193,047.96 × 79,457.73
4. Step 4: Simplify right side
   139,895.07x = 15,339,152,682.73
5. Step 5: Solve for x
   x = 15,339,152,682.73/139,895.07
6. Step 6: Final answer
   x = 109,647.56