Finding the Fourth Proportional to 139,422.51, 192,402.56 and 79,004.66

Step by Step Solution

1. Step 1: Write the proportion equation
   139,422.51 : 192,402.56 = 79,004.66 : x
2. Step 2: Convert to fraction form
   139,422.51/192,402.56 = 79,004.66/x
3. Step 3: Cross multiply
   139,422.51x = 192,402.56 × 79,004.66
4. Step 4: Simplify right side
   139,422.51x = 15,200,697,478.89
5. Step 5: Solve for x
   x = 15,200,697,478.89/139,422.51
6. Step 6: Final answer
   x = 109,026.14