Finding the Fourth Proportional to 142,070.69, 196,082.98 and 84,713.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,070.69 : 196,082.98 = 84,713.72 : x
2. Step 2: Convert to fraction form
   142,070.69/196,082.98 = 84,713.72/x
3. Step 3: Cross multiply
   142,070.69x = 196,082.98 × 84,713.72
4. Step 4: Simplify right side
   142,070.69x = 16,610,917,472.29
5. Step 5: Solve for x
   x = 16,610,917,472.29/142,070.69
6. Step 6: Final answer
   x = 116,920.09