Finding the Fourth Proportional to 162,981,605.56, 224,918,870.70 and 89,644,672.12

Step by Step Solution

1. Step 1: Write the proportion equation
   162,981,605.56 : 224,918,870.70 = 89,644,672.12 : x
2. Step 2: Convert to fraction form
   162,981,605.56/224,918,870.70 = 89,644,672.12/x
3. Step 3: Cross multiply
   162,981,605.56x = 224,918,870.70 × 89,644,672.12
4. Step 4: Simplify right side
   162,981,605.56x = 20,162,778,417,502,176
5. Step 5: Solve for x
   x = 20,162,778,417,502,176/162,981,605.56
6. Step 6: Final answer
   x = 123,711,987.92