Finding the Fourth Proportional to 142,097,742.72, 196,098,706.08 and 86,324,188.32

Step by Step Solution

1. Step 1: Write the proportion equation
   142,097,742.72 : 196,098,706.08 = 86,324,188.32 : x
2. Step 2: Convert to fraction form
   142,097,742.72/196,098,706.08 = 86,324,188.32/x
3. Step 3: Cross multiply
   142,097,742.72x = 196,098,706.08 × 86,324,188.32
4. Step 4: Simplify right side
   142,097,742.72x = 16,928,061,632,958,248
5. Step 5: Solve for x
   x = 16,928,061,632,958,248/142,097,742.72
6. Step 6: Final answer
   x = 119,129,701.21