Finding the Fourth Proportional to 139,603.72, 192,622.71 and 79,160.74

Step by Step Solution

1. Step 1: Write the proportion equation
   139,603.72 : 192,622.71 = 79,160.74 : x
2. Step 2: Convert to fraction form
   139,603.72/192,622.71 = 79,160.74/x
3. Step 3: Cross multiply
   139,603.72x = 192,622.71 × 79,160.74
4. Step 4: Simplify right side
   139,603.72x = 15,248,156,264.41
5. Step 5: Solve for x
   x = 15,248,156,264.41/139,603.72
6. Step 6: Final answer
   x = 109,224.57