Finding the Fourth Proportional to 142,313, 196,374.93 and 78,642.14

Step by Step Solution

1. Step 1: Write the proportion equation
   142,313 : 196,374.93 = 78,642.14 : x
2. Step 2: Convert to fraction form
   142,313/196,374.93 = 78,642.14/x
3. Step 3: Cross multiply
   142,313x = 196,374.93 × 78,642.14
4. Step 4: Simplify right side
   142,313x = 15,443,344,737.55
5. Step 5: Solve for x
   x = 15,443,344,737.55/142,313
6. Step 6: Final answer
   x = 108,516.75