Finding the Fourth Proportional to 142,454,420, 196,587,112.56 and 80,573,426.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,454,420 : 196,587,112.56 = 80,573,426.72 : x
2. Step 2: Convert to fraction form
   142,454,420/196,587,112.56 = 80,573,426.72/x
3. Step 3: Cross multiply
   142,454,420x = 196,587,112.56 × 80,573,426.72
4. Step 4: Simplify right side
   142,454,420x = 15,839,697,307,949,552
5. Step 5: Solve for x
   x = 15,839,697,307,949,552/142,454,420
6. Step 6: Final answer
   x = 111,191,336.20