Finding the Fourth Proportional to 142,083.84, 196,061.74 and 78,417.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,083.84 : 196,061.74 = 78,417.54 : x
2. Step 2: Convert to fraction form
   142,083.84/196,061.74 = 78,417.54/x
3. Step 3: Cross multiply
   142,083.84x = 196,061.74 × 78,417.54
4. Step 4: Simplify right side
   142,083.84x = 15,374,678,946.83
5. Step 5: Solve for x
   x = 15,374,678,946.83/142,083.84
6. Step 6: Final answer
   x = 108,208.50