Finding the Fourth Proportional to 139,892.48, 193,045.62 and 79,462.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,892.48 : 193,045.62 = 79,462.94 : x
2. Step 2: Convert to fraction form
   139,892.48/193,045.62 = 79,462.94/x
3. Step 3: Cross multiply
   139,892.48x = 193,045.62 × 79,462.94
4. Step 4: Simplify right side
   139,892.48x = 15,339,972,519.32
5. Step 5: Solve for x
   x = 15,339,972,519.32/139,892.48
6. Step 6: Final answer
   x = 109,655.45