Finding the Fourth Proportional to 142,264.95, 196,329.59 and 78,606.84

Step by Step Solution

1. Step 1: Write the proportion equation
   142,264.95 : 196,329.59 = 78,606.84 : x
2. Step 2: Convert to fraction form
   142,264.95/196,329.59 = 78,606.84/x
3. Step 3: Cross multiply
   142,264.95x = 196,329.59 × 78,606.84
4. Step 4: Simplify right side
   142,264.95x = 15,432,848,668.40
5. Step 5: Solve for x
   x = 15,432,848,668.40/142,264.95
6. Step 6: Final answer
   x = 108,479.63