Finding the Fourth Proportional to 139,830.91, 192,967.92 and 79,402.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,830.91 : 192,967.92 = 79,402.82 : x
2. Step 2: Convert to fraction form
   139,830.91/192,967.92 = 79,402.82/x
3. Step 3: Cross multiply
   139,830.91x = 192,967.92 × 79,402.82
4. Step 4: Simplify right side
   139,830.91x = 15,322,196,052.69
5. Step 5: Solve for x
   x = 15,322,196,052.69/139,830.91
6. Step 6: Final answer
   x = 109,576.60