Finding the Fourth Proportional to 139,784.86, 192,904.95 and 79,350.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,784.86 : 192,904.95 = 79,350.94 : x
2. Step 2: Convert to fraction form
   139,784.86/192,904.95 = 79,350.94/x
3. Step 3: Cross multiply
   139,784.86x = 192,904.95 × 79,350.94
4. Step 4: Simplify right side
   139,784.86x = 15,307,189,113.15
5. Step 5: Solve for x
   x = 15,307,189,113.15/139,784.86
6. Step 6: Final answer
   x = 109,505.34