Finding the Fourth Proportional to 142,092.29, 196,087.37 and 78,430.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,092.29 : 196,087.37 = 78,430.10 : x
2. Step 2: Convert to fraction form
   142,092.29/196,087.37 = 78,430.10/x
3. Step 3: Cross multiply
   142,092.29x = 196,087.37 × 78,430.10
4. Step 4: Simplify right side
   142,092.29x = 15,379,150,665.25
5. Step 5: Solve for x
   x = 15,379,150,665.25/142,092.29
6. Step 6: Final answer
   x = 108,233.54