Finding the Fourth Proportional to 139,724.17, 192,845.93 and 79,300.47

Step by Step Solution

1. Step 1: Write the proportion equation
   139,724.17 : 192,845.93 = 79,300.47 : x
2. Step 2: Convert to fraction form
   139,724.17/192,845.93 = 79,300.47/x
3. Step 3: Cross multiply
   139,724.17x = 192,845.93 × 79,300.47
4. Step 4: Simplify right side
   139,724.17x = 15,292,772,886.59
5. Step 5: Solve for x
   x = 15,292,772,886.59/139,724.17
6. Step 6: Final answer
   x = 109,449.73