Finding the Fourth Proportional to 142,454,414, 196,587,104.28 and 80,573,420.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,454,414 : 196,587,104.28 = 80,573,420.72 : x
2. Step 2: Convert to fraction form
   142,454,414/196,587,104.28 = 80,573,420.72/x
3. Step 3: Cross multiply
   142,454,414x = 196,587,104.28 × 80,573,420.72
4. Step 4: Simplify right side
   142,454,414x = 15,839,695,461,278,952
5. Step 5: Solve for x
   x = 15,839,695,461,278,952/142,454,414
6. Step 6: Final answer
   x = 111,191,327.92