Finding the Fourth Proportional to 111,978,992.25, 168,034,623.26 and 47,278,609.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,978,992.25 : 168,034,623.26 = 47,278,609.29 : x
2. Step 2: Convert to fraction form
   111,978,992.25/168,034,623.26 = 47,278,609.29/x
3. Step 3: Cross multiply
   111,978,992.25x = 168,034,623.26 × 47,278,609.29
4. Step 4: Simplify right side
   111,978,992.25x = 7,944,443,300,065,493
5. Step 5: Solve for x
   x = 7,944,443,300,065,493/111,978,992.25
6. Step 6: Final answer
   x = 70,945,836.72