Finding the Fourth Proportional to 142,222.16, 196,263.24 and 78,554.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,222.16 : 196,263.24 = 78,554.96 : x
2. Step 2: Convert to fraction form
   142,222.16/196,263.24 = 78,554.96/x
3. Step 3: Cross multiply
   142,222.16x = 196,263.24 × 78,554.96
4. Step 4: Simplify right side
   142,222.16x = 15,417,450,967.67
5. Step 5: Solve for x
   x = 15,417,450,967.67/142,222.16
6. Step 6: Final answer
   x = 108,404.00