Finding the Fourth Proportional to 139,516.08, 192,485.34 and 79,081.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,516.08 : 192,485.34 = 79,081.98 : x
2. Step 2: Convert to fraction form
   139,516.08/192,485.34 = 79,081.98/x
3. Step 3: Cross multiply
   139,516.08x = 192,485.34 × 79,081.98
4. Step 4: Simplify right side
   139,516.08x = 15,222,121,808.17
5. Step 5: Solve for x
   x = 15,222,121,808.17/139,516.08
6. Step 6: Final answer
   x = 109,106.58