Finding the Fourth Proportional to 142,152.65, 196,171.61 and 77,622.34

Step by Step Solution

1. Step 1: Write the proportion equation
   142,152.65 : 196,171.61 = 77,622.34 : x
2. Step 2: Convert to fraction form
   142,152.65/196,171.61 = 77,622.34/x
3. Step 3: Cross multiply
   142,152.65x = 196,171.61 × 77,622.34
4. Step 4: Simplify right side
   142,152.65x = 15,227,298,428.91
5. Step 5: Solve for x
   x = 15,227,298,428.91/142,152.65
6. Step 6: Final answer
   x = 107,119.34