Finding the Fourth Proportional to 139,885.25, 193,035.60 and 79,455.71

Step by Step Solution

1. Step 1: Write the proportion equation
   139,885.25 : 193,035.60 = 79,455.71 : x
2. Step 2: Convert to fraction form
   139,885.25/193,035.60 = 79,455.71/x
3. Step 3: Cross multiply
   139,885.25x = 193,035.60 × 79,455.71
4. Step 4: Simplify right side
   139,885.25x = 15,337,779,688.10
5. Step 5: Solve for x
   x = 15,337,779,688.10/139,885.25
6. Step 6: Final answer
   x = 109,645.44