Finding the Fourth Proportional to 142,164.88, 196,188.88 and 78,501.28

Step by Step Solution

1. Step 1: Write the proportion equation
   142,164.88 : 196,188.88 = 78,501.28 : x
2. Step 2: Convert to fraction form
   142,164.88/196,188.88 = 78,501.28/x
3. Step 3: Cross multiply
   142,164.88x = 196,188.88 × 78,501.28
4. Step 4: Simplify right side
   142,164.88x = 15,401,078,201.77
5. Step 5: Solve for x
   x = 15,401,078,201.77/142,164.88
6. Step 6: Final answer
   x = 108,332.51