Finding the Fourth Proportional to 142,087.01, 196,079.13 and 78,424.81

Step by Step Solution

1. Step 1: Write the proportion equation
   142,087.01 : 196,079.13 = 78,424.81 : x
2. Step 2: Convert to fraction form
   142,087.01/196,079.13 = 78,424.81/x
3. Step 3: Cross multiply
   142,087.01x = 196,079.13 × 78,424.81
4. Step 4: Simplify right side
   142,087.01x = 15,377,468,025.02
5. Step 5: Solve for x
   x = 15,377,468,025.02/142,087.01
6. Step 6: Final answer
   x = 108,225.71