Finding the Fourth Proportional to 142,680.83, 196,899.39 and 79,018.61

Step by Step Solution

1. Step 1: Write the proportion equation
   142,680.83 : 196,899.39 = 79,018.61 : x
2. Step 2: Convert to fraction form
   142,680.83/196,899.39 = 79,018.61/x
3. Step 3: Cross multiply
   142,680.83x = 196,899.39 × 79,018.61
4. Step 4: Simplify right side
   142,680.83x = 15,558,715,123.15
5. Step 5: Solve for x
   x = 15,558,715,123.15/142,680.83
6. Step 6: Final answer
   x = 109,045.59