Finding the Fourth Proportional to 119,924,128.28, 165,495,825.18 and 64,919,984.78

Step by Step Solution

1. Step 1: Write the proportion equation
   119,924,128.28 : 165,495,825.18 = 64,919,984.78 : x
2. Step 2: Convert to fraction form
   119,924,128.28/165,495,825.18 = 64,919,984.78/x
3. Step 3: Cross multiply
   119,924,128.28x = 165,495,825.18 × 64,919,984.78
4. Step 4: Simplify right side
   119,924,128.28x = 10,743,986,451,011,662
5. Step 5: Solve for x
   x = 10,743,986,451,011,662/119,924,128.28
6. Step 6: Final answer
   x = 89,589,864.91