Finding the Fourth Proportional to 151,514,780.16, 209,090,306.52 and 81,900,162.12

Step by Step Solution

1. Step 1: Write the proportion equation
   151,514,780.16 : 209,090,306.52 = 81,900,162.12 : x
2. Step 2: Convert to fraction form
   151,514,780.16/209,090,306.52 = 81,900,162.12/x
3. Step 3: Cross multiply
   151,514,780.16x = 209,090,306.52 × 81,900,162.12
4. Step 4: Simplify right side
   151,514,780.16x = 17,124,530,001,708,494
5. Step 5: Solve for x
   x = 17,124,530,001,708,494/151,514,780.16
6. Step 6: Final answer
   x = 113,022,175.02