Finding the Fourth Proportional to 142,616.17, 196,802.50 and 78,072.93

Step by Step Solution

1. Step 1: Write the proportion equation
   142,616.17 : 196,802.50 = 78,072.93 : x
2. Step 2: Convert to fraction form
   142,616.17/196,802.50 = 78,072.93/x
3. Step 3: Cross multiply
   142,616.17x = 196,802.50 × 78,072.93
4. Step 4: Simplify right side
   142,616.17x = 15,364,947,806.33
5. Step 5: Solve for x
   x = 15,364,947,806.33/142,616.17
6. Step 6: Final answer
   x = 107,736.37