Finding the Fourth Proportional to 139,779.98, 192,894.46 and 79,350.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,779.98 : 192,894.46 = 79,350.10 : x
2. Step 2: Convert to fraction form
   139,779.98/192,894.46 = 79,350.10/x
3. Step 3: Cross multiply
   139,779.98x = 192,894.46 × 79,350.10
4. Step 4: Simplify right side
   139,779.98x = 15,306,194,690.45
5. Step 5: Solve for x
   x = 15,306,194,690.45/139,779.98
6. Step 6: Final answer
   x = 109,502.05