Finding the Fourth Proportional to 151,609,456.09, 209,221,049.25 and 81,994,836.90

Step by Step Solution

1. Step 1: Write the proportion equation
   151,609,456.09 : 209,221,049.25 = 81,994,836.90 : x
2. Step 2: Convert to fraction form
   151,609,456.09/209,221,049.25 = 81,994,836.90/x
3. Step 3: Cross multiply
   151,609,456.09x = 209,221,049.25 × 81,994,836.90
4. Step 4: Simplify right side
   151,609,456.09x = 17,155,045,809,300,618
5. Step 5: Solve for x
   x = 17,155,045,809,300,618/151,609,456.09
6. Step 6: Final answer
   x = 113,152,874.84