Finding the Fourth Proportional to 139,725.78, 192,814.76 and 79,302.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,725.78 : 192,814.76 = 79,302.02 : x
2. Step 2: Convert to fraction form
   139,725.78/192,814.76 = 79,302.02/x
3. Step 3: Cross multiply
   139,725.78x = 192,814.76 × 79,302.02
4. Step 4: Simplify right side
   139,725.78x = 15,290,599,953.82
5. Step 5: Solve for x
   x = 15,290,599,953.82/139,725.78
6. Step 6: Final answer
   x = 109,432.92